18 U.S.C. § 2151 (Title 18—Chapter 105: Sabotage)
As used in this chapter [18 U.S.C. §§ 2151 et seq.]:
The words "war material" include arms, armament, ammunition, livestock, forage, forest products and standing timber, stores of clothing, air, water, food, foodstuffs, fuel, supplies, munitions, and all articles, parts or ingredients, intended for, adapted to, or suitable for the use of the United States or any associate nation, in connection with the conduct of war or defense activities.