Papua New Guinea

MRE's are designed on the principle that if you force troops to eat them, they will be happy to run into heavy machine gun fire to avoid having to go though the experience again.

Its the same logic as to why the Scots regiments are not given alcohol before a battle. You just need to tell them that the enemy stole the whisky the night before. Then sit back and watch them crush anything and anyone between the starting point and the enemies supply dumps.