Enter message mode by pressing \ and then type:

!when all else fails...

(including the ... ) to enable cheat mode. Hit \ again and type one of the following:

!santini - god mode
!acme discs - land mines
!aluminum foil - flak jacket
!beautiful nikita - infinite sniper rifle
!fourth of july - M80
!god of gamblers - random item
!geronimo! - 12 free air strikes
!gnomish inventions - explosives
!i have a rock - infinite hand grenades
!no rocket launcher - infinite rocket launcher
!paper dolls - paratroopers
!roach spray - infinite aerosol spray
!ruby ray - infinite magnifying glass
!village people - infinite flamethrower
!doctor doctor - full health
!god of gamblers - gives you a random item
!i give up - restarts the level
!jumpjets - lets you fly
!night of the walking dead - turns units into zombies
!ninja arts - stealth mode
!patton's speach - promotes highlighted men
!rubber cement - gives medkit
!spidey senses tingling - reveals entire map
!surprise party - increases the number of enemies
!suicide kings - kill sarge
!veni vidi vinci - wins mission
!watchtower - in the sky recon
!smorfs - blue uniform
!metal sheeting - gray uniform
!shrink wrap - tan uniform
!pooper scooper - minesweeper
!phoenix! - ignite your man
!armageddon - mass air strike