Baker

Sergeant Baker is a character in the Campaign. He the deuteragonist of the Campaign, and is a key character in most of the missions, being the leader of Kilo Force One.

Early life
Nothing much is known about Baker's early life, other than he was born in Phoenix, Arizona, and his parents die unexpectedly when he was growing up, forcing him to fend for himself. At the age of 22, Baker joined the United States Marine Corps, where he later on gained the rank of Sergeant. He was also the leader of the legendary Marine 2-2 unit, who took part in Operation Valkyrie. At the age of 27, he was honorably discharged. Baker decided to get a job as a bank security guard, which he was hired. He was a successful guard, and was also the most popular, since many people recognize him as the legendary soldier who took part in Operation Valkyrie. Baker foiled at least 3 robberies, and even went as far as wound one of the burglars attempting to get inside the bank. At the age of 30, he got a message from his former commander.

Kilo Force One
Lieutenant Daniel McCoy told Baker about the Marine Corps Security Force Regiment, and invited Baker to join. He decided to join the regiment, were he retained the rank of Sergeant. Baker became the leader of Kilo Force One, a counter terrorism unit. It consisted of himself, Emerson, Arnett, and later on, Michael Hicks. He and Emerson almost immediately became best friends, while he also befriends new recruit Hicks.

Camp Texas evacuation
Baker was responsible for training the new USMC recruits. He also was responsible for training Chris Goldberg, the player character in that mission. He taught Goldberg how to handle a firearm, and how to shoot one. After this, Baker leads Goldberg to the grenade range, where Baker teaches him about grenades, and instructs Goldberg to throw a grenade into a window. After Goldberg finishes training, he walks back to the barracks. Baker then hears gunshots ring out, and finds the recruit dead. Baker sees terrorists entering the camp, and he orders the other Marines to evacuate immediately, Baker shoots some of the terrorists and takes over, where he later runs into his squad mates Emerson and Arnett. Baker orders Emerson to cover him while he gets to a cargo truck, while Arnett follows Baker. After he finds a truck, he orders Emerson to push forward. They find the truck being operated by Cpl. Fletcher, and order him to get them out the camp.

Infiltration
Baker and his team return to Lieutenant Daniel McCoy, who briefs them about the new terrorist threat. He also assigns new recruit Pvt. Michael Hicks to Baker's team. McCoy sends Baker and his team to a warehouse, which they must infiltrate and gather intel on the enemy. The mission was a partial success, but the team was ambushed by an overwhelming amount of enemy forces, but they managed to escape the base via a stolen Technical. They reported back to the command post where McCoy discusses their next move.

Rescue mission
McCoy tells Baker about the terrorists' leader, Tomáš Svoboda, and suggested the team to capture or kill him, since he has a large bounty on his head. But before they can do so, McCoy sends the team to Moscow, Russia, where they must rescue two American prisoners from a military prison, Sgt. McMillan and Pvt. Jackson. They enter the prison via a stolen UAZ-469, but a squad of Russian Army soldiers stops them before they can enter the prison, and tells the team that they are trespassing, and tells them to give them a valid reason why they are here, or they will execute them. Instead of bothering to answer the soldiers' questions, Baker and Hicks kill two of the soldiers, while Emerson and Arnett kill the other two. They steal the soldiers' uniforms and hide the bodies, and enter the prison. Baker asks a guard to take his group to McMillan and Jackson's cells, but the guard questions Baker's authority. He then threatens the guard that he will tell the warden about the guard's actions. He begs Baker not to say anything, and Baker orders him to take them to the two Marines' cells.

The guard then questions why they wanted to see the two soldiers, to which Emerson tells him that they are bringing the soldiers in for interrogation. Confused, the guard decides to open their cells. While the guard was opening Jackson's cell, Emerson snaps the guard's neck, killing him instantly. Another guard sees this, and then tries to call in backup, but is killed by Hicks before he could do so.