Here is some information and stuff about Ace Combat 4
Yellow 13 Squadron Leader
X-02 Wyvern
Mobius 1 - Callsign of the player-controlled hero of the game. Achieves legendary status amongst both allies and enemies following his single-handed destruction of all the Stonehenge railguns. Shoots down Yellow 4 (during the Stonehenge Offensive) and Yellow 13 (during the Siege of Farbanti).
Yellow 13 - Enemy ace pilot and leader of the Yellow Squadron. Known for never losing a wingman in combat and for always flying in the 5 plane formation. Flies an Su-37, along with the rest of the Yellow Squadron. Shoots down a plane that crashes into the storyteller boy's house.
Yellow 4 - Wingman of Yellow 13. Trained by Yellow 13. She is the only Yellow Squadron casualty at the Stonehenge Offensive.
Storyteller boy - He tells the story through a sequence of letters he is writing to Mobius 1 after the war is over. His family is killed at the beginning of the war after a plane shot down by Yellow 13 crashes into his home, and he moves into San Salvacion with his uncle. Eventually his uncle disappears (it is unknown why, believed to be because of a drunken comment), so he begins hanging around the Yellow Squadron at a bar in San Salvacion, and he befriends Yellow 13.
Barkeep's daughter - Older than the storytelling boy, but still a young teenager, she watches over him and helps tend the bar. She also helps relay information about the Yellow Squadron to her father, who is a member of the resistance. She is revealed to be the one who bombed the air base of the Yellow Squadron late in the war.
Barkeep - Owner of the bar where the Yellow Squadron hangs out. Although he takes a lot of flak from the townsfolk for being nice to the Yellow Squadron, he is really a member of the underground resistance and gathers information to help the ISAF.
Jean-Louis - Leader of the Yellow Squadron after Yellow 13 dies. He can be killed at Megalith.
Gene - Field promoted to the leader of the Yellow Squadron if Jean-Louis is killed in the battle at Megalith.
Esther - Pilot in the Yellow Squadron during the siege on Megalith.
Mihael - Pilot in the Yellow Squadron during the siege on Megalith.
Risto - Pilot in the Yellow Squadron during the siege on Megalith. Only mentioned if shot down.
Kenneth - Pilot in the Yellow Squadron during the siege on Megalith. Risto's death is reported to Kenneth.
SkyEye - Field tactician and commanding officer of Mobius 1. Operates one or more stations of an AWACS. Calls missile shots and lock-ons for Mobius 1. His birthday is on the same day, September 19, that the missions "Sitting Duck" and "Siege of Farbanti" take place.
About the Super Weapons of Erusia:The two main superweapons are Stonehenge and Megalith. Stonehenge is a battery of railguns in a circular arrangement that have remarkable range of fire. The massive shockwave produced by firing them, used primarily to destroy asteroids, is also very capable of shooting down airplanes.
The next superweapon is Megalith. Housed on an island, probably hundreds of miles from the mainland, is primarily used as a ballistic missile launch platform to shoot down asteroid fragments in orbit. It has a remarkable ground range that can reach the entire Usea continent. To destroy Megalith, the player must fly inside three tunnels beneath the base to destroy three generators, then they must destroy the large missile contained within. After flying through the opening silo doors to escape, a cut scene will commence showing Megalith exploding after the player's narrow escape.
Mobius Squadron Insignia (your squadron in the last mission)
And some cool stuff about it
The Yellow squadrons plane paint scheme is based upon the three World War II Messerschmitt Bf-109G G-10 models. Each plane had yellow on the tip of the tail, nose, wings, with the rest grey. Each plane also had a big yellow '13' on the each side.
Yellow's 13's aircraft is an unlockable paint scheme in Ace Combat 04, Ace Combat 5, Ace Combat Zero and Ace Combat X. Likewise, Mobius 1's paint scheme is unlockable as well.
The superweapon Stonehenge is named after the Stonehenge site in Britain.
Stonehenge's massive railguns are arranged to resemble to the positions of the megaliths in the real Stonehenge in the United Kingdom of Great Britain.
The superweapon Megalith is named after the stones that made the real Stonehenge, called megaliths.
The First Officer's last name on the damaged civilian flight carrying the Stonehenge designers is 'Nagase', who strangely sounds like Kei Nagase from Ace Combat 5. They share the same last name and their voices sound similar. However, Nagase is a common name used by Namco, and it's unlikely they are the same person (Nagase was only 23 in AC5, which would mean she would have to be around 17 in AC04).
Möbius is the name of a crater on the far side of the moon, fitting with the background of the game's plot, which centers around a war fought using weapons designed to protect against asteroid impacts.
There are many similarities to the game to the World War II invasion of France. For example, the there is a resistance similar to that of the Maquis, the ISAF landing on Crowne Beach resembles that of D-day, the liberation of the capitol resembles the liberation of France, and the Erusian infantry uniform is similar to the German uniform.
F-22 Raptor
F-22 Raptor
Heres a good picture of the HUD and that famous crater
Information from Wikipedia