On the filling screen simply pop up a file and instead of your name type in "Let me cheat!" (making sure you include the capital and exclamation mark). Now instead of pressing return, hit the Reset button. The number next to the losses columm will now be 1, and this shows you are in the cheat mode. Now type your name in and you can get into the game as normal.
When you reach the map screen, where you choose which battle area to attack, you are now able to get to any of the squares on the map simply by holding down the right mouse button while clicking on any square. In this cheat mode there are two major facilities. If you press the left [Amiga] key and [W] during a scenario you will automaticly win the battle, and if you go to the map screen screen during the game, and select a desination using the mouse, then pressing the left [Amiga] key followed by the number of the unit you are playing (1, 2, 3 or 4), that unit will instantly go to the the destination marked.