The C-Ration, or Type C ration, was an individual canned, pre-cooked, and prepared wet ration. It was intended to be issued to U.S. military land forces when fresh food (A-ration) or packaged unprepared food (B-Ration) prepared in mess halls or field kitchens was impractical or not available, and when a survival ration (K-ration or D-ration) was insufficient. Development began in 1938 with the first rations being field tested in 1940 and wide-scale adoption following soon after. Operational conditions often caused the C-ration to be standardized for field issue regardless of environmental suitability or weight limitations.