Press Enter key then enter one of the following cheats

autowin!:           win instanly
dolemite:           soldiers are invincible
paul haney:         sees all-show enemy soldiers
toggle bottombar:   switch bottom dispay
set_campaign:       select campaign (see below)

Add one of these to the set_campaign cheat above

Angola_tutorial
Angola
Romania
Kola
Caribbean
Kola _2
Ecuador 
Peru
Angola_2
     

Thanks to Revolution reader Petatje!