Definition of C rations in English:

C rations

plural noun

North american
  • A type of canned food formerly used by US soldiers.

    • ‘For some odd reason, manufacturers tend to label 10-in - 1 rations as C rations.’
    • ‘On the frontlines, soldiers were eating K rations, C rations and D rations.’
    • ‘However, they like C rations and will eat them for a longer time than American troops will before complaining.’
    • ‘The meals in the case of C rations would not always be the same from one case to another as the date of production on any case of C rations may vary widely.’

Origin

C for combat.