Go to the save game option, then the game requests a name type
"JOOLS".  Cheat mode active will flash at the bottom of the screen
and the ranks and abilities of your men will have increased.

                               (HINTS)

1.  In Choppas, land on the enemy to kill them, safer than landing
    and getting out.

2.  I missions in which you have control of a lot of troopers
    seperate the lowest ranking trooper from the rest and give him
    all the weapons, make sure the rest are safe, then attempt the
    mission with one trooper.  If the trooper dies just press
    'ESC'.  This saves a lot of troopers later, such as in mission
    18 phase 5 of 5 - The Door.

3.  Troopers are able to throw grenades quite along way and over
    walls, trees, and buildings.  Use this to your advantage to
    protect against Biggunz and Jeeps.  To throw a grenade a long
    way, simply position the pointer further than needed.

4.  Buildings can be destroyed even if you can't see them.  For
    instance, if a trooper is in Biggun and there is a building
    slightly off the edge of the screen, roughly aim at the
    building making sure the pointer is at the very edge of the
    screen and fire.

5.  Learn to control Jeeps and Skidooz early on (how to skid
    them).  In later levels you may need good control to hit ramps
    at correct angles otherwise you can blow up if you hit walls.
    This is also useful to get away from shells, rockets, and
    grenades.

6.  An effective way of destroying snipers is to just run straight
    towards them and shoot you guns.  Don't waste grenades on them
    unless it is necessary.