There was an uneasy peace throughout the world after World War one; a war that had left ten million men dead. A world war between coordinators and naturals, the naturals were always jealous of their genetically enhanced human beings that possess a number of unique traits: faster bodies, immunities to all diseases. They are physically and mentally stronger than the naturals. There is also a discrepancy of being a coordinator. Unwanted traits may occur when born. Unusual traits ranging from: different coloured hair and unusual eye colours. The naturals quickly became fearful of the coordinators, as a result conflict grew between nations over the issue of harvesting more coordinators. Empires such as: the German Empire, Austria Empire, Ottoman Empire was for the coordinator harvesting. France, Britain, USA, Russia knew of their intentions and deployed their troops. When the aggressive nation of Germany attacked France and then Russia, the world plunged itself into a World War. A new type of war was fought; trench warfare.

The butchery and horrors of trench warfare had left tens of thousands dead within a year, hundreds of thousands within another year, millions in the next and finally, ten million during the next two years. Germany and its allies called an armistice, ceasefire was agreed. Germany and its allies were punished for causing war. Germany was economically ruined and militarily reduced to a mere police force. An uneasy peace between the coordinators and the naturals lasted for decades, until PLANT Germany flared up under the dictatorship of Gilbert Durandal. He desired a perfect race, a superior race, thus he looked to the coordinators as they were the dominant species. Hitler's aggressive actions plunged the world into another world scale war. The Allied powers consisting of: Britain, France, America and Russia faced the Axis forces consisting of: PLANT Germany, fascist Italy and Imperialist Japan. The united Allied forces were unified under the ORB union. The united Axis military forces were known as ZAFT. This war was destined to be bloodier than the first.

On the Allied side, Cagalli Yula Athha, the representative and princess of ORB was only twenty when she inherited the right to rule ORB when her father had died. Her twin brother: Lieutenant Kira Yamato was at the front lines of the never ending conflict, he was a coordinator, whereas his sister was a natural. Kira was a highly skilled tank ace; the best Allied tank ace. His tank was named: "Freedom". His tank was the single-manned M-26 Pershing tank, given to him by his girlfriend Lacus Clyne. Lacus Clyne was the supplier of tanks and aircraft for the ORB union. Her parents business was called: Clyne motors. It was obvious to everyone that Kira is definitely a coordinator.

Although he had natural brown hair, he had light purple eyes, he was too kind and generous for anyone to hate him, natural or coordinator, they all liked him for who he is. His twin sister on the other hand did not show much of a feminine side. She did not wear any skirts or dresses, instead wore plain clothes; mostly a T-shirt and jeans. She was seen as a tomboy by Kira and most of her friends. Her temper was always high and ready to explode at any moment; even Kira feared her and knew very well not to disturb Cagalli while she was angry, the last time Cagalli got angry, Kira tried to calm her down, but Kira almost became dead meat when Cagalli chased Kira around the house with a butcher's cleaver.

Both Cagalli and Kira were raised by different families. Their father had died and their mother could not afford to keep the family running, so as a result, Kira went to the Yamato family and Cagalli went to the Athha family when they were born. They both met at a dinner party hosted at the Athha manor. Both where completely shocked when they found out.

On the Axis side, in the ZAFT military, a coordinator: Sergeant Athrun Zala. His unique traits were obvious that he was a coordinator. He had midnight blue hair and emerald green eyes. Like Kira he was very kind hearted and warm. The only problem was, Athrun was filled with propaganda that Nazi Germany fed him while he was in the ZAFT military. He was the best Axis tank ace at the age of only twenty. His father was a General in the Nazi high command so Athrun was very well known publicly and militarily. Athrun named his tank "Savior", owning the single-manned Panther IV tank, given to him by his father. His tank was marked with double crossed swords.

Only those with exceptional skill and experience could be able to man these single crew tanks. Unlike Kira, Athrun was given military training. Kira was only taught basic training; shooting and fitness training. In comparison, Athrun was taught everything from: extremely accurate marksmanship, hand to hand combat, survival training, sub-human fitness and psychological fitness. He was trained by the ZAFT paratroopers called: "Fallshirmjager". Elite German paratroopers, the only Allied unit that could outflank and outmaneuver them were the American 101st Airborne paratroopers. Easy Company was the best company out of: Dog, Fox and Able Company.

The best of the best was 2nd platoon. Their commanding officer: "The Major" was the best tactical field commander and a strategically genius in military history. His tactical successes were ousting the ZAFT into submission.

Cagalli Yula Athha had been requested to come to an Allied HQ for a political meeting with the Allied President Simeon and Prime Minister Buskirk.

But to get to the Allied HQ, Cagalli needed to fly over hostile skies where she risked being shot down and captured. Although the Allies had dominated the skies, enemy flak guns and artillery positions were concealed and difficult to spot. These flak 88mm guns had shot down many Allied planes, so therefore, Cagalli went over the Axis skies in the cover of darkness. Midway through her flight, the searchlights spotted her transport plane and began shooting 88mm projectiles, as the plane took a direct hit, Cagalli jumped out of the plane unleashing her parachute. She was forced to land in enemy territory armed with only a colt 45 pistol. She was more of a long range type, she loved the M1 Garand due it its relatively high rate of fire and accuracy, but she did not have it with her.

Athrun Zala and his crew were one of many squads assigned to look for the enemy that had landed in their glorious 'Fatherland'.