defense rations
Dated term for food supplies stockpiled for national defense or emergency use, especially in wartime contexts.
戦時中、各家庭に防衛食が配給された。
During the war, defense rations were distributed to each household.
Compound of 防衛 (defense) and 食 (food, meal). The exact historical origin is uncertain, but it likely emerged in military or civil defense contexts.