2 Year War

Officially called 2 Year War, also known as War of Sacrifices (犠牲の戦争 Gisei no sensō) due to high amount of casualty on both sides, destruction of entire universe sectors and death of many known figures. It is the first contact between the universe and the Void since the events of Extinction War 10,000 years ago.

Causes
On 3 January 2780 C.U., Crepuscle Empire destroyed the final barrier that separated them from the known universe. Destruction of the 10,000 year old barrier caused multiple reality tear in different fringes of the galaxy, causing quantum fissures to appear. This was the universe and the void attempting to reunite as one again. The biggest known quantum fissure appeared near the fringes of Northern Space Frontier, the resulting fissure consumed 2 planetary system in the process. First documentation of the fissure were observed by a space station hovering the fringe planet Njord at the edge of Rune Planetary System. The system, including the space station, were annihilated within minutes before they could report unknown ships exiting the fissure. By the time the report had reached the headquarters of Northern Frontier Planetary Systems, located on planet Thraw of the Everest Planetary System, Crepuscle Empire had already destroyed half the planets in the system and began its attack on the planet itself. War was swiftly declared by all forces spread across the universe, in part due to Crepuscle Empire military forces attacked everything on sight regardless of factions and alignments when they exited the fissures from different sides of the galaxy.

Overview
The Two Year War was the single known largest and most devastating conflict since the Cosmic Universe calendar started, in sheer number of military casualties, civilian deaths, and devastation across the entire universe. It began on January 3, 2780 CU, when the Crepuscle Empire immediately attacked anything in sight the moment it emerged from the space fissure. As reports of the devastations and its speed reached the capitals of each major powers fighting for control over the known and unknown universes, the reality set in for all the leaders; unite or face extinction. United Space Coalition, better known as USC, was formed within the day to combat the extinction level invasion brought forth by Crepuscle Empire.

During the fierce fighting in the first month of the war, casualties were heavy on both sides. As the war progressed into its first year, weapons of mass destruction were used indiscriminately. Solaris Imperium deployed Brightburn Orbital Napalms on inhabited colonies infested with void creatures, much to the chagrin of other USC members. Solaris Imperium also attempted to use Dawn Bringer, an Extinction class warship capable of destroying planets to attack Crepuscle Empire's temporary fortress located on the planet Hermes, a fallen territory of SFU. Despite the threats of expulsion from the alliance brought forth by majority of its members, Solaris Imperium still intended to carry out the plan without approval in the name of greater good. That was until the sudden appearance of Dresvarpr, widely referred to as the strongest being alive. He killed Imperium's representative Merek Bright, who was also the nephew of the Imperium's Caesar, and severely maimed 3 other Imperium generals who were there as his bodyguard. Dresvarpr further threatened to reduce Solaris Imperium to dust if they attempted to utilize it for nefarious means again, he teleported away unhindered as USC knew that the combined military might of all the members would have had more chance winning the war than winning against him.

United Space Nation Command(USNC) also utilized Anti-Matter bombs during the Battle of Inges, which caused an uproar within the USNC itself and the Alliance at large. That almost resulted in USNC's expulsion from the alliance, but the motion was not passed as the Anti-Matter bombs only caused casualty on the enemy side. By the end of the war, the void lost 2/3 of their respective populations while half of USC's combined population and military forces were either dead or missing. At the end of the war, United Space Coalition agreed to sign the Treaty of Vita which, among other things, forbade the use of weapons of mass destruction regardless of enemy. This treaty was almost broken when Solaris Imperium sent an Extinction Class warship, Dawn Bringer, in an attempt to dusk the planet Hope, home world to a standalone anti-war neutral faction. This was due to their refusal to handover survivors from Crepuscle Empire. It was swiftly resolved when Dresvarpr appeared in front of Dawn Bringer while it was preparing to fire, and disabled the warship. This led to Solaris Imperium declaring war on Dresvarpr, which ended as quickly as it began. Planet Solaris, home world of Solaris Imperium, was almost razed to the ground and left in ruins. Luth Bright, Caesar of Solaris Imperium, was decapitated and slammed onto the high castle walls for all of Imperium to witness. The short war would later be known as The Tragedy of the Bright Tyrant. Despite the extensive damage caused on multiple Imperium controlled planets, not one soldier nor citizen was killed in the conflict. All the casualties were notorious locally or Imperium wide for their cruelty, corruption and abuse of power, with Luth Bright already branded a tyrant by the common folks and soldiers alike before the war began. This led to Dresvarpr being worshipped as the new God of Justice in the Imperium, something that bothers him till this day due to his status as a Infinite Stage being, which grants him the ability to listen to prayers. While he is not part of the Solaris Pantheon, he does appear from time to time to attend to urgent help requests from its God King, Solux, a descendent of his old friend Sol.

Beginning
When the Crepuscle Empire had appeared from the quantum fissures, the space station orbiting Planet Njord had only sent out the quantum fissure sightings report to neighbouring planets within the system and to the Space Front Union Northern HQ. The space station along, with planet Njord, were attacked and taken over before they could report the sightings of unknown ships exiting the fissures. Over 20 planetary systems were either feasted on, taken, or destroyed by the time SFU's Northern Frontier Planetary Systems HQ even received the reports of the sightings. Crepuscle Empire were also creating more quantum space fissures to allow different access points from the void by detonating void bombs within the planets core. The HQ was unprepared and communication arrays were completed destroyed, planetary defense only managed to hold out for 1 day to evacuate as many people as possible. The planet was eventually taken by Crepuscle Empire, with the surviving defense forces executed and inhabitants massacred. Only 5 Traveler Class Spaceship and 1 Crusher Class Warship stationed on the planet managed to evacuate the planet, traveling to SFU main planetary system through space jump. The remaining ships that attempted to evacuate were all destroyed during the battle, with its inhabitants mostly dead by the time Crepuscle military forces made landfall.

Battle of Hermes
Often referred to as One Man War or Voidling Massacre, the Voidborn Empire attacked Space Front Union colonial planet Njord immediately after emerging from the space fissurel. None of the colonial planets were equipped nor eveb remotely prepared to fend off any invading forces, let alone an invading force the scale of Voidborn Empire. The system was thought to be lost within minutes and conquered by Voidborn Empire. That was until Space Front Union HQ received an emergency SOS signal 3 days later from one of the planets located at the edge of Rune system, Hermes. It managed to hold off the invading forces thanks to the efforts of Director General of East Fringe Planetary Systems, Alivia Fluffs, and General Overseer of Space Front Union Military Command, Kumaga Tenma. They were there for honeymoon when the invasion happened. By the time Space Front Union reinforcements, along with 3 strongest members of Bladework Elder Council got there, it was already too late. Voidborn Empire have already changed its course and the quantum space fissure was nowhere to be seen. What they thought were space debris surrounding the entire Rune planetary system were millions upon millions of dead creatures of the void and carcasses of 3 of the Old Gods. They located the source of the distress signal and found an entire city of survivors, uninjured thanks to the metropolis size 126 layered barrier enacted by Alivia.

The Battle of Loum
After the failure of Operation British, Zeon forces attacked Side 5, also known as Loum, on January 15, UC 0079. Beginning as an attempt to drop a second colony, the operation quickly turned into a full scale fleet battle when the majority of the surviving Earth Federation Space Forces, commanded by General Revil, counterattacked. Zeon used nuclear weapons in this battle, causing horrific loss of life not only among the combatants, but resulting in the complete destruction of Side 5 as well. The Earth Federation managed to halt the attempted colony drop and inflict significant losses on the Zeon forces but they were unable to prevent the destruction of Side 5. However, they were able to evacuate a few million of its inhabitants before the battle began but in the end their forces were annihilated during the battle. The Battle of Loum marked the first time that mobile suits showed their true potential in combat, proving to be viciously effective against the Earth Federation fleet. General Revil was captured by the Black Tri-Stars and several other Zeon pilots (most notably Char Aznable, Shin Matsunaga, and Johnny Ridden) first made a name for themselves as mobile suit aces.

During the battle, the Zeon 603 Technical Evaluation Division set up and deployed a massive cannon, the QCX-76A Jormungand. The Special Forces operatives who were in charge of the cannon had high hopes that the Jormungand, with its immense power and tremendous firing range, would be the weapon that gave Zeon the edge it needed to win. However despite the fact that Jormungand's operators were ordered into position for the battle they were never given the needed targeting data, and in fact it appeared that Zeon command never had any intention of using the weapon, instead relying on the new MS-06 Zaku II. The Jormungand's gunner did fire three shots using visual data and managed to destroy one Magellan-class battleship, and possibly disabled one Salamis-class cruiser.

The Antarctic Treaty
After the atrocities of the One Week Battle and the Battle of Loum, with nearly one third of humanity dead, the Earth Federation and the Principality of Zeon met in Antarctica to discuss terms of peace. The Federation, having suffered major losses to its space forces at Loum as well as the loss of more than one billion of its citizens in less than a month, were ready to consider surrendering to the Principality of Zeon. However, during the negotiations, General Revil escaped from Zeon custody and returned to the Earth Federation, giving his famous "Zeon is exhausted!" speech detailing the poor condition of Zeon's military after the heavy fighting. In a large part due to this speech, the Earth Federation refused to surrender at Antarctica, instead negotiating for several important agreements. The use of weapons of mass destruction—including the use of nuclear and chemical weapons, as well as colony drops—were declared forbidden, rules for the humane treatment of POWs were agreed upon, and the neutrality of uninvolved parties such as Side 6 and the Jupiter Energy Fleet were guaranteed.

The Earth Invasion
Following the bloody One Week War, the Federation and Principality signed the Antarctic Treaty, forbidding the use of Nuclear, Biological, and Chemical (NBC) weapons. While this narrowed the range of strategic options, it also gave a distinct advantage to the Principality Army, whose plans were centered on use of Mobile Suits. Upon realizing that the war was becoming a long, drawn out battle instead of a sudden, quick strike, the Principality of Zeon decided to invade Earth. One week later, the Principality commenced its assault on Earth itself, using the Mass Driver, an electromagnetic "catapult" on the lunar surface, to send their MS into space and Earth. In February they began to organize an Earth Attack Force under the command of Garma Zabi, the youngest member of the Zabi family, divided into five MS divisions with distinct goals. Beginning on March 1, the newly formed Earth Attack Force began staging drop operations to land troops on Earth; over the course of the next month, they would complete a total of five drops, landing in central Asia, North America, Australia, and northern African and the Middle East.

The first group dropped on Central Asia, wiping out the Federation's Baikonur spaceport. They then advanced to the Caspian Sea, moving west into Europe and south into the Middle East. The second and third groups were dropped on both coasts of North America with two objectives: 1) to subjugate the Federation's industrial military complex. 2) To take over the Federation food supply. The California Base (a generic term for the more than 20 military bases along the west coast) became the staging ground for subsequent terrestrial assaults. As the bases were captured without damage, they were soon converted to production of Zeon MS. The fourth group, aided by support troops already on Earth, occupied many islands of the Oceania region for the procurement of resources. Up until then, the Principality faced a distinct disadvantage in resource availability, having to rely on Lunar and asteroid mining. The fifth and final group landed in the largely unprotected deserts of North Africa. With facilities, food and resources at their disposal, the Principality was set for global conquest.

From these drop locations, the Zeon army spread across the planet, using captured facilities and material (notably including the Earth Federation's massive California Base) to strengthen their military power. Within a few months, Zeon controlled most of Europe, Asia and North America. With the Federation forces scattered and their numbers decimated, their outlook was grim.

Operation V
During Zeon's offensive on Earth, the Earth Federation were desperately trying to develop mobile suits of their own. Project V was a result of this; a top secret Earth Federation Forces research project aimed at producing mobile suits for the Earth Federation, while the Vinson Plan was enacted to rebuild the Earth Federation Space Forces. A major breakthrough of Project V was the development of compact, mobile suit-sized beam weapons, giving a mobile suit the effective power of a battleship cannon. Three prototype designs were completed under Operation V; the long-range tank-like RX-75 Guntank, the mid-range support RX-77 Guncannon, and the close combat oriented RX-78-2 Gundam. The suits would be stored on the Federation's newest battleship, the SCV-70 White Base, the first Federation warship to not only carry mobile suits, but also able to operate on Earth and in space. Unfortunately for the Earth Federation, while the new Pegasus-class ship White Base was traveling to Side 7 with a number of RX-series prototypes for space testing, they were discovered by a Zeon Musai commanded by Char Aznable. Aznable's subordinates attempted to destroy the Operation V prototypes while on a recon mission inside Side 7, and during the attack the civilian Amuro Ray managed to enter the cockpit of a Gundam unit. The first ever case of MS vs. MS combat took place on September 18, UC 0079, when Amuro destroyed two Zaku IIs with the Gundam. This point marks the beginning of the story of Mobile Suit Gundam. It also set into motion a series of events that would send the White Base to Earth crewed almost entirely by civilian refugees. On October 4, Earth Attack Force commander Garma Zabi was killed while leading an attack against the White Base in North America.

Operation Odessa
Operation Odessa was the Earth Federation Force's first major offensive campaign on Earth. A chance to strike back opened up with the death of Garma Zabi. Operation Odessa used 30% of the Federation Army to take out the Zeon mining facilities in the Odessa region; the lynchpin of the Principality supply network. Launched in early November, the objective of the campaign was to capture the Zeon mining facilities at Odessa and drive Zeon forces out of Europe and Asia. The operation was launched on November 7, ending two days later in victory for the Earth Federation. This was remarkable for the fact that the Earth Federation Forces consisted almost entirely of conventional tropps, tanks and aircraft, and yet managed to defeat a Zeon force consisting of many mobile suits. The Earth Federation did deploy a small number of mobile suits, but they were mainly used in mop-up operations, and contributed relatively little to the battle. Operation Odessa marked the turning point of the One Year War; the beginning of the end for Zeon's forces in Europe and Asia. However, the leader of the Zeon mining operations, Colonel M'Quve, had enough mining material sent to the Zeon homeland to allow the Principality to continue the war without the danger of supply shortages. This battle was the largest and the bloodiest on Earth, where the Earth Federation relied heavily on conventional weapons such as tanks, bombers, fighter craft, a small number of MSs (30 units), and a large number of troops (3,700,000) compared to the smaller but much better equipped Principality of Zeon army; who fielded only a relatively small amount of fighters, bombers, tanks, and artillery, but over a hundred MSs which were more advantageous. (The complete statistics of the battle can be seen on Odessa)

In the TV series version of Mobile Suit Gundam the White Base played a more important role. M'Quve had the aid of a traitor within the Federation, General Elron, who through his associate Judoc, planned to sabotage the operation by holding back the troops led by Elron to allow M'Quve's forces to attack the troops belonging to General Revil. White Base pilots Amuro Ray and Sayla Mass accidentally witnessed Judoc's Federation-commissioned plane leave a Zeon base without incident and they followed it to Elron's location where both were arrested, allowing Revil to take direct command of Elron's forces and use both armies to easily overpower M'Quve's unsuspecting soldiers. In desperation, M'Quve tried to break the Antarctic Treaty by launching a nuclear missile but Amuro and the Gundam disabled it before detonation. From there, the determined Earth Federation Forces emancipated Europe, Asia and eventually North America. The remaining Zeon troops regrouped for a massive assault on Jaburo base, hoping to kill the heart of the Federation.

Battle of Jaburo
On November 29, White Base finally reached the HQ of Earth Federation forces, Jaburo. At the same time, Char Aznable found the main entrance of Jaburo. Zeon began their initial attack by launching air raids. Char led a commando squad to infiltrate Jaburo through another way after wiping out a guard post with a squad of MSM-04 Acguys. Char's squad found the GM manufacturing factory inside Jaburo and planted bombs on the GMs, which were found by the orphans from White Base. The following morning, California Base sent several Dopps and Gaws to attack Jaburo, air-dropping many MSs while several marine-type MSs attacked Jaburo through the river. However, Zeon underestimated Jaburo's defenses. The Federation officers agreed that White Base's presence would lure their enemy to Jaburo and had prepared a heavy defense against Zeon, part of which included introducing some of the newly mass-produced GMs to overpower them, though not without losses. The defenses at the space port were the strongest, since White Base was docked there, and the defenders put up stiff resistence as it was expected that White Base would bring the war to an end. On the other side of Jaburo there was a new Gundam, RX-78-6 Mudrock Gundam, defending it. However, it was destroyed by the Zeon's Midnight Fenrir. Char, defeated in a duel against the RX-78-2 Gundam piloted by Amuro Ray, retreated from Jaburo alongside the other Zeon forces. After the Battle of Jaburo, most of the Zeon military began retreating to space, leaving only the Zeon troops in North Africa continuing their resistance. White Base also left for space to provide a decoy operation.

Battle of Baldur Bay
After the Battle of Jaburo ended and White Base launched back into space, a Zanzibar commanded by Char Aznable caught up with it, only to let the nearby Zeon patrol, the Camel Patrol Team led by Char's ex-lieutenant Dren engage White Base. By this time, Zeon had replaced their Space Attack Force's mainstay MSs Zaku II with newer MS-09R Rick Dom. Instead of cutting off White Base's route of providing decoy, the whole patrol team was wiped out by White Base's forces. After the battle, White Base went to Side 6 for repairs. Zeon Space Attack Force's commander Vice Admiral Dozle Zabi, worrying of Earth Federation Space Forces built-up at Luna II, dispatched the Conscon Fleet to trap the White Base while he remained stationed at Solomon to observe Federation's movements.

On December 5, Dozle's Conscon Fleet reached Baldur Bay of the neutral Side 6, as White Base was docked in that neutral colony side. White Base left Side 6 and engaged the Conscon Fleet. White Base attacked a Musai-class cruiser and destroyed it a very few moments after it exited Side 6's perimeter. Conscon berated White Base for playing dirty and ordered a full-out attack on White Base, but lost 12 Rick Doms within 3 minutes, most of them to the Federation's infamous Gundam. Those Rick Doms were no match for Amuro, as his Newtype abilities were growing stronger, making his reaction time much faster. Conscon's Chivvay-class was destroyed by Amuro who charged towards it after destroying the Rick Doms.

It was the first time Side 6 saw direct conflict of the war on their doorstep, clearly captured by a TV camera shuttle rented by Cameroon Bloom. As the battle ended with the White Base successfully destroying the Conscon Fleet, Side 6 had aligned itself closer to the Federation while keeping its sovereignty as an autonomous republic, retaining its neutrality in the war, a move that irked the Zeon forces. This explained why there were larger presence of Federation garrisons in Side 6 when Operation Rubicon (detailed below) started few weeks later after White Base left.

Operation Rubicon
On December, Zeon intelligence learned of Earth Federation's secret project in the Arctic: The development of the RX-78NT-1 Gundam "Alex", the intended successor for Amuro's RX-78-2 Gundam. Zeon sent the Cyclops Team, a special task force, to capture the project materials before they were sent to space. However, things went badly for the Cyclops Team as the Federation launched the materials into space before Cyclops Team could stop them. On December 14, Gray Phantom arrived at Side 6's Libot colony Federation base. The Cyclops Team infiltrated Libot to learn the location of the Gundam in preparation for an attempt to capture it. On December 19, Cyclops Team launched an attack with their MS-18E Kämpfer, as a diversion, while other members of the team infiltrated the Federation's base, disguised as Federation soldiers. Most of the Cyclops Team members, including the leader Hardy, were killed in action. Christina MacKenzie sortied in the Gundam "Alex" to stop Zeon's MS-18E Kämpfer, piloted by Mikhail Kaminsky to try to prevent it from causing more damage on Libot. With the mission apparently ending in failure, Colonel Killing ordered the destruction of Libot colony with a nuclear missile.

The last remaining member of the Cyclops team, Bernard Wiseman, in an effort to save the colony by completing the mission, launched an attack against the Federation base on Christmas with his MS-06FZ Zaku II Kai. Christina then launched in Gundam "Alex" in an attempt to stop him without further damage to the colony. At the end of the battle, both machines were severely damaged, and Wiseman was killed. Operation Rubicon ended in failure, as the Cyclops Team had failed to capture or destroy Federation's new Gundam. The Gundam, however, was in no condition to be sent into battle, and the war ended only a week later. The operation itself saw the violation of 2 points in the Antarctic Treaty, as Zeon had attacked a neutral colony and later attempted to destroy it with nuclear weapons.

Operation Cemballo
On December 14, Operation Cemballo began with the launch of a new Earth Federation fleet from their fortress Jaburo. Sending their new fleets into space, the EFSF moved towards the Zeon homeland at L2. Standing in their way was the Zeon defensive line, consisting of the asteroid space fortresses Solomon and A Baoa Qu, as well as the lunar city Granada. On December 24, UC 0079, the EFSF fleet launched an attack on the asteroid base Solomon, the headquarters of Zeon's Space Attack Force. Using their Solar System, the Earth Federation inflicted heavy damage on the enemy fortress and was able to take Solomon. When it was clear that the battle was lost, Zeon Space Attack Force Dozle Zabi gave the order to evacuate the base and sortied in the Big Zam to fight a delaying action. He succeeded in allowing many Zeon forces to retreat, but was killed by Amuro Ray in the process. The capture of Solomon marks the end of Operation Cemballo, and this event is also known as 'Battle of Solomon'.

Operation Star One
Using the newly captured Solomon (later renamed Konpei Island) as a staging area, the Earth Federation Space Forces continued their offensive toward Side 3 in Operation Star One. On December 30, with the Earth Federation Forces en route to the Zeon asteroid base A Baoa Qu, Zeon leader Sovereign Degwin Zabi approached the EFSF fleet with the intention of negotiating an end to the war. Gihren Zabi gave the order to fire the Solar Ray at the EFSF fleet which was assembling at Geldova Line, knowing that his father was in the line of fire. This attack destroyed a full third of the Earth Federation fleet present and killed both Degwin Zabi and General Revil in the process.
 * See Also A Baoa Qu

Despite these losses, the Earth Federation continued their attack on A Baoa Qu. They assaulted the asteroid base on December 31, UC 0079. With their remaining forces, the EFSF fought against the gathered forces of Zeon's Mobile Attack Force and A Baoa Qu's garrison forces. During the battle Kycilia Zabi executed her half-brother Gihren for the crime of murdering their father Degwin, and took command of the Zeon military herself. In the confusion this caused, some Zeon forces—notably the Delaz Fleet—fled before the battle was over. When it became clear that the Zeon forces would lose, Kycilia herself attempted to retreat; however, she was killed by Char Aznable before she could escape.

War's End
After Zeon's defeat at A Baoa Qu, and the death of the leadership on both sides of the conflict, the newly restored Republic of Zeon surrendered to the Earth Federation. The two parties signed a peace treaty at Granada on New Year's Day, January 1, UC 0080. By the terms of the treaty, Side 3 was allowed to keep its independence. However, some of Zeon's remaining military was dissatisfied with the conclusion of the war. Some of these forces retreated to the Zeon base Axis in the asteroid belt, while others, such as the Delaz Fleet and various remnant forces on Earth, remained in the Earth Sphere, hiding from the Earth Federation with the hope of one day striking back at them.

The hostility between Earthnoids and Spacenoids remained at large, mostly due to Operation British, which caused a catastrophic disaster on Earth and caused heavy casualties on Earthnoids. There were even Earthnoids whom blamed their suffering on Spacenoids for starting the war. This caused a racial moot where Earthnoids considered themselves to be the elites and wanted to teach the Spacenoids a painful lesson; this moot fueled the formation of Titans, in addition to the Operation Stardust, when another colony was dropped on Earth.

Aftermath
The One Year War set the stage for many of the Universal Century's later conflicts. The Delaz Fleet's Operation Stardust was a direct result of renegade Zeon soldiers' dissatisfaction with the outcome of the war. The Titans were created to counter this threat, thus setting the stage for the Gryps Conflict. The Axis Zeon faction, which later became the First Neo Zeon, was also formed as a direct result of the One Year War, and their actions heavily influenced the Gryps Conflict and the First Neo Zeon War. Other groups, such as the Second Neo Zeon and "The Sleeves", are not spawned directly from the One Year War, but can trace their roots indirectly back to the conflict.

Trivia

 * This war is actually based on the real world's World War II, however, what differs them are that One Year War is set in the future and a fictional war, where as humanoid robots (Mobile suits) and mobile armors replacing WWII's vehicles, i.e. MS as tanks or fighter aircrafts and MA as tank destroyers or attacker/bomber aircrafts.The book Gundam and World War II analysed MS as tanks and MS development record stated MA are tank destoryers compared to MS as tanks. While official settings often state the use of MS in space warfare in OYW is comparable to the use of aircrafts in navy battles in WWII However in the One Year War, foot soldiers, tanks, submarines, and aircrafts also play a huge role in the war like what they played in the real life WWII.
 * Zeon's use of poison gas to kill the garrisons of Earth Federation and the inhabitants within Side 1, Side 2 and Side 4 was an allusion to real life Nazi's methods of gasing Jews in its concentration camps, most notably Auschwitz.
 * Operation Odessa/Battle of Odessa resembles real life's Battle of Stalingrad. Both turned out to be the bloodiest battle in mankind and also served as the turning point of both World War II and One Year War. The victor of the battles turned out to be the forces to suffer heaviest casualties, as the Soviet Union and Earth Federation took the most losses during the battle to achieve pyrric victory while the losers of the battle, Nazi Germany and Principality of Zeon, which suffered great deal of casualties, began to fall back on each battle fronts and eventually lost the war. The statistics of the Battle of Odessa can be seen on Odessa.
 * Darcia Bakharov's role in the Principality of Zeon is similar to that of Georg Michaelis' in Germany although Michaelis was in charge after World War I, not II.