A War Reserve Stock is a collection of warfighting material held in reserve in pre-positioned storage to be used if needed in wartime. They may be located strategically depending on where it is believed they will be needed. In addition to military equipment, a war reserve stock may include raw materials that might become scarce during wartime. According to this definition, storage such as the Strategic Petroleum Reserve

Strategic Petroleum Reserve

The Strategic Petroleum Reserve is an emergency fuel storage of oil maintained by the United States Department of Energy.- United States :The US SPR is the largest emergency supply in the world with the current capacity to hold up to ....

 may be considered a war stock.

The United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 maintains war reserve stocks around the world, mainly in NATO countries and in some major non-NATO allies

Major non-NATO ally

Major non-NATO ally is a designation given by the United States government to close allies who have strategic working relationships with US armed forces but are not members of the North Atlantic Treaty Organization...

. The US 31st Munitions Squadron is tasked with maintaining and distributing the largest war reserve stock piles of munitions for the United States Air Forces in Europe

United States Air Forces in Europe

The United States Air Forces in Europe is the United States Air Force component of U.S. European Command, a Department of Defense unified command, and is one of two Air Force Major Commands outside of the continental United States, the other being the Pacific Air Forces...

.