WW1 military rations, from https://net.lib.byu.edu/estu/wwi/memoir/ration.html

  > British Daily Ration, 1914:
  > 
  > 1 1/4 lb fresh or frozen meat, or 1 lb preserved or salt meat;
  > 1 1/4 lb bread, or 1 lb biscuit or flour;
  > 4 oz. bacon;
  > 3 oz. cheese;
  > 5/8 oz. tea;
  > 4 oz. jam;
  > 3 oz. sugar;
  > 1/2 oz salt;
  > 1/36 oz. pepper;
  > 1/20 oz. mustard;
  > 8 oz. fresh or 2 oz. dried vegetables;
  > 1/10 gill lime juice if fresh vegetables not issued;
  > 1/2 gill rum;
  > not exceeding 2 oz. tobacco per week.

So, mostly meat, bread, bacon, and sugar?