United States

National in-service fixed-wing aircraft classified as Combat aircraft by FlightGlobal/Cirium, summing the Active column across all military services listed for the country. Excludes the separately classified trainers, special-mission aircraft, tankers and helicopters, as well as aircraft in storage, undergoing or awaiting upgrades, and orders. This is the directory's active-role inventory estimate, not a measure of combat readiness.

US Army in-service Abrams MBT inventory including National Guard holdings; excludes approximately 1,500 additional M1A1/A2 in store and M10 Booker light tanks.

National in-service fixed-wing military transport aircraft classified as Transport by FlightGlobal/Cirium, summing the Active column across all military services listed for the country. Includes strategic, tactical and light liaison/utility transport aircraft; excludes the separately classified trainers, special-mission aircraft, tankers and helicopters, as well as aircraft in storage, undergoing or awaiting upgrades, and orders. This is the directory's active-role inventory estimate, not a measure of immediate availability.

2020 annual observation. Active-duty military personnel, including qualifying paramilitary forces; not an active-regular-only count.

National military reserve pool; excludes the separately reported active and paramilitary personnel. Training/mobilisation definitions remain source-specific.

Commissioned cruisers, destroyers and frigates in the national fleet; excludes aircraft carriers, corvettes, patrol, amphibious and support vessels. Fleet count, not immediately deployable strength.

Commissioned military submarines in the national fleet; excludes orders, construction and uncommissioned trial boats. Fleet count, not immediately deployable strength.

Warheads in the military stockpile: in the custody of the military and earmarked for use by military forces, deployed or in reserve. Excludes retired warheads awaiting dismantlement.