While in game open console by pressing the "~" key. Enter the following codes then press enter to enable them.

Cheat Mode: @Password( "Panzerklein" )
God Mode: @God(0,1)
Win Battle: @Win(0)

The Cheat mode must be on for the other two codes to work. God mode makes all your units invincible and the Win battle code ends the current map in a victory for you.