b. A ration is the allowance of food for one per- son for one day. The garrison ration is ordinarily prescribed in time of peace. It is issued in the form of a money allowance. Units draw such available food components as they may elect within the limits of this allowance, and may be credited with ration savings. The field ration is ordinarily issued in time of war, national emergency, or field training. It is issued in kind and the ration savings privilege is suspended. Its components and substitutes are pre- scribed by the War Department or the commander of the field forces, and may consist of field ration A, B, C, D, K, or 10-in-1, or combinations of these.
(1) Field ration A corresponds in general to the peacetime- garrison ration and generally is perish- able. Being perishable, it is not suitable as a reserve ration.
(2) Field ration B is the same as field ration A except that nonperishable substitutes replace perish- able items. This ration is suitable as a reserve ration.
(3) Field ration C is a cooked, balanced ration in cans. Each ration consists of three cans of pre-
pared meats and vegetables and three cans ers, sugar, soluble coffee, and a confection. ration is not perishable, it is suitable for unit reserve or individual reserve.
of crack- As this use as a
(4) Field ration D consists of three 4-ounce con- centrated food bars, largely chocolate, three bars being one ration. It is a nonperishable ration and is suitable for use as an individual reserve.