Earned in Blood continues the Brothers in Arms saga, with the player taking the role of newly-promoted Sergeant Joe "Red" Hartsock (Hartsock was the Corporal of Baker's Fire Team), who was part of the historic Normandy invasion in the previous game.
As well as improved single-player AI, Earned in Blood includes several new multiplayer missions, weapons and vehicles, plus a new co-op skirmish mode.
The gameplay in Earned in Blood is similar, if not identical, to Brothers in Arms: Road to Hill 30. The player usually assumes command of two teams of paratroopers to use the Four Fs - Find, Fix, Flank, and Finish - tactic against the enemy. The game discourages the use of solo run & gun tactics by limiting the player's ability to aim, decreasing the player's health, and placing large numbers of enemies behind cover.