The U.S. Army appears in Call of Duty in the first campaign. The player controls Pvt. Martin from the 506th Parachute Infantry Regiment, 101st Airborne Division. The U.S. Army also appears in the Multiplayer mode of this game.

As a first-person shooter, Call of Duty places the player in control of an infantry soldier who makes use of various authentic World War II firearms in combat.

Mining Gemstones\n\n There are various deposits around the valley that you can mine. Some will clearly show gemstones buried inside, so you can mine these and collect the precious jewels that drop. Many of these sell for over 600 Star Coins, so you can quickly repeat this process once the deposits respawn.

Star Coins cannot be obtained in-game; they can only be bought from the game's official website. Star Riders receive 100 Star Coins every Saturday until the player's subscription runs out. The only ways of obtaining Star Coins for free are the 100 Coins given upon account creation and sometimes through Redeem Codes.