For a new vehicle with a bonus weapon hold SHIFT and type "SWEAPON" during
game play.
Basically, there is not much of cheating. But if you do want so, go to the
directory where you installed the game and look for UA.ini file. It is too
large for notepad and would be opened with Wordpad, fits me.
There you will learn how to edit the stuff.
You can modify the game basics, your host station's power, you units'
power and opponents' as well.
You can change it simply by putting in a reasonable value in numbers.