i don't really know all of them but they did ration meat, cheese, candy and chocolate. that's probably the only things i know that they rationed, oh and i think they also rationed clothes, I also think that they rationed eggs.
The soldiers and aviators, airmen and parachute jumpers did use D-rations for emergency purposes so they would keep up their blood glucose. The D-Rations consisted of chocolate bars, candy, vitamins...