Sergeant Mariano Noriel
Joker One's first-squad leader, a twenty-five year- old Filipino immigrant with a feisty personality and can-do attitude. The unofficial second-in-command of the platoon.
Sergeant Danny Leza
Joker One's second-squad leader, a twenty-three year- old Latino fluent in both English and Spanish. A quiet intellectual and one of Joker One's ablest tacticians.
Corporal Chris Bowen
Joker One's third-squad leader, a twenty-year-old New Hampshire native and one of the best all-around Marines in the platoon. Three years younger than his squad leader peers because of numerous merit-based promotions.
 Corporal Brian Teague
Joker One's first fire team leader, first squad, a twenty-one-year-old native of the backwoods of Tennessee. The platoon's best shot and one of its most skilled Marines.
Lance Corporal Todd Bolding
Member, second fire team, first squad. The twenty-three-year-old leader of Joker One's mortar team, and the only African American in the platoon. Nicknamed "Black Man." 
Lance Corporal Joe Mahardy
Radio operator, first squad. Twenty-year old Mahardy had achieved academic honors at Syracuse University. Intelligent, tough, and talkative in equal measures.
Private First Class Gabriel Henderson
Member, second fire team, first squad. Nineteen-year-old Henderson persevered through unexplained chest pains early on to become one of the most cheerful, well-loved members of the platoon. Nicknamed "Hendersizzle."
Lance Corporal Nick Carson
Third fire team leader, second squad. The biggest Marine in the platoon at six foot three and well over two hundred pounds. Twenty years old, he was strong, unselfish, and inhumanly tough.
Private Josh Guzon
Member, second fire team, second squad. The shortest, stockiest Marine in the platoon at five foot four and one hundred and sixty pounds. Nicknamed "Gooch."
Private First Class Ramses Yebra
Radio operator, second squad. Twenty years old and the fastest Marine in the platoon, running three miles in under sixteen minutes. Tough, calm, and quiet, he was saddled with the radio shortly after joining Joker One.