These codes for MoH: Frontline are from gamefaqs.com, but I reformatted (Or tried as much as possible) them to be easier to read... however if you've got an easier way to format them be my guest... as per usual, if you notice any errors or anything that just don't work... feel free to fix the page.
NOTICE: On the 360, Black Button = Right Bumper and White Button = Left Bumper.
Gameplay Codes
At the Password screen enter:
TODADOME - Achilles Mode
NOHITSFORU - Bullet Shield
ENCHILADA - Full Bonus Menu
SALMON - Gold on previous level
GHOSTSHOTS - Invisible Enemies
TONSOFUN - M.O.H.ton Torpedo
MERCER - Men with Hats
ONEPMPCHMP - Pefectionist Mode
ELASTIC - Rubber Grenades
KILLERSHOT - Silver Bullet Mode
LONGVIEW - Sniper Mode
Pause the game and enter X, Left trigger, B, Right trigger, BACK, Y, X - Invincibility
Contributed By: Eds Xwing, Jobu Dudley, MoH, marko531
Level Unlocks
Unlock Mission 2 Level 1 - Type in BASS into the enigma machine
Unlock Needle in a Haystack Level - Type in STURGEON into the enigma machine.
Unlock Rolling Thunder Mission - Type in TROUT into the enigma machine
Unlock Several Bridges too Far - Type in PIKE into the enigma machine
Unlock The Horten's Nest Mission - Type in CATFISH into the enigma machine
Contributed By: MoH, loneskater16, tigger
Misc. Unlockables
Bronze Star for any level - Complete the level
EA LA Medal of Valor - Complete the game with a gold medal in every mission
Gold Star for any level - Complete the level and kill 95% of the enemies with at least 75% health
Silver Star for any level - Complete the level and kill 95% of the enemies
Contributed By: Ace Wing
Unlockable medals
Complete the levels with all gold medals to get the secret medals.Army Commendation Medal - Storm in the Port mission
Army Distinguished Service Medal - D-Day mission
Distinguished Service Flying Cross - Horten's Nest mission
Dutch WWII Cross - Several Bridges Too Far mission
EA LA Medal of Valor - Beat game with all gold medals
Legion of Merit - Rolling Thunder mission
Soldiers Medal - Needle in a Haystack mission
Contributed By: nado
Video Unlocks
At the password screen enter:
COTOBREATH - "A Good Day to Dye" Video
FLIPBOOK - Unlock "From the Animator's Desk" Video
XTRASCENEO - Unlock the Making of Mission 1
XTRASCENET - Unlock the Making of Mission 2
XTRASCENER - Unlock the Making of Mission 3
XTRASCENEF - Unlock the Making of Mission 4
XTRASCENEI - Unlock the Making of Mission 5
XTRASCENES - Unlock the Making of Mission 6
Contributed By: Jobu Dudley, Here To Stay