United States - Government current expenditures: National defense was 726.80900 Bil. of $ in January of 2022, according to the United States Federal Reserve. Historically, United States - Government current expenditures: National defense reached a record high of 726.80900 in January of 2022 and a record low of 43.98100 in January of 1959. Trading Economics provides the current actual value, an historical data chart and related indicators for United States - Government current expenditures: National defense - last updated from the United States Federal Reserve on April of 2024.