Cheat mode
Enter 2ndsquad as a profile name to unlock all levels and extras
including "Infinite Ammunition", "Super Squad", and "Old Movie"
modes.

Full team health
Die 4 times after a save point and you will be asked if you want
to heal your squad.

Brothers In Arms: Earned In Blood cheats and hints (PS2)
# Cheat mode

Enter "2ndsquad" as a profile name in North American version of the game to unlock all levels and extras including "Infinite Ammunition", "Super Squad", and "Old Movie" modes. Alternately, enter "BAKERSDOZEN" as a profile name.

# Old Movie mode

Successfully complete the game on the Easy difficulty setting to unlock Old Movie mode. This mode allows the game to be played in black and white.
# Infinite Ammunition

Successfully complete the game on the Normal difficulty setting to unlock the "Infinite Ammunition" option.

# Authentic mode

Successfully complete the game on the Hard difficulty setting to unlock the Authentic difficulty setting. This mode has no checkpoints, saves, icons nor reticules.

# Super Squad

Successfully complete the game in Authentic mode to unlock the "Super Squad" option.

# Full team health

Die four times after a save point and you will be asked if you want to heal your squad.