They sure did, compo ration packs contained food for 10 men for one day or 1 man for 10. According to several sources they tasted far better than US field rations and were highely prized by US troops (my Grandpa refers to a shelter that had a wall stacked with compo boxes, wen the US trooops arrived the wall vanished). Good idea for a war winning weapon, but then the attitude to food in the RKKA was different, when the field kitchen was at the front about the best you could expect was thin cabbage soup or maybe buckwheat porridge if you were lucky. There was a formal food ration along western lines but rather than being tins of stew etc it consisted of bread, cheese, meat and some grain. Apparently spam was quite popular and one soviet soldier was entertained by the site of siberian troops eating Spam and Pineapple, unsure of what either of them was.

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There's no honorable way to kill, no gentle way to destroy. There is nothing good in war. Except its ending.