Let’s face it. Americans are spoiled. When it comes to feeding the troops, even American soldiers are pretty well off compared to most other countries. Well, at least the FOBBITs are anyway. For the grunts it's MRE's, which are actually pretty good these days, although depending on who you ask MRE stands for "Meal Rejected by Ethiopia" or "Meal Refusing to Exit". This was not always the case, and American soldiers had to make do with some awful stuff at various times.
"A": 1.13 Kilograms (when transportation is difficult)
"B": .86 1/2 Kilogram (when transportation is very difficult)