Editing United States Army (section)

=====1945–1960=====
[[File:Exercise Desert Rock I (Buster-Jangle Dog) 003.jpg|thumb|upright|U.S. Army soldiers observing an atomic bomb test of [[Operation Buster-Jangle]] at the [[Nevada Test Site]] during the [[Korean War]]|alt=]]

The end of World War II set the stage for the East–West confrontation known as the [[Cold War]]. With the outbreak of the [[Korean War]], concerns over the defense of Western Europe rose. Two corps, [[V Corps (United States)|V]] and [[VII Corps (United States)|VII]], were reactivated under [[Seventh United States Army]] in 1950 and U.S. strength in Europe rose from one division to four. Hundreds of thousands of U.S. troops remained stationed in West Germany, with others in [[Belgium]], the [[Netherlands]] and the [[United Kingdom]], until the 1990s in anticipation of a possible [[Soviet Union|Soviet]] attack.<ref name=PerkinsAOC>{{cite web|url=https://www.youtube.com/watch?v=-46HlgVPYDQ |archive-url=https://ghostarchive.org/varchive/youtube/20211211/-46HlgVPYDQ |archive-date=11 December 2021 |url-status=live|title=Perkins discusses operationalizing the Army Operating Concept|last=US Army TRADOC|date=16 September 2015|publisher=[[YouTube]]|access-date=2 November 2017}}{{cbignore}}</ref>{{rp|minute 9:00–10:00}}

[[File:US Army tanks face off against Soviet tanks, Berlin 1961.jpg|thumb|right|US tanks and Soviet tanks at [[Checkpoint Charlie]], 1961]]
During the Cold War, U.S. troops and their allies fought [[Communism|communist]] forces in Korea and [[Vietnam]]. The Korean War began in June 1950, when the Soviets walked out of a UN Security Council meeting, removing their possible veto. Under a [[United Nations]] umbrella, hundreds of thousands of U.S. troops fought to prevent the takeover of [[South Korea]] by [[North Korea]] and later to invade the northern nation. After repeated advances and retreats by both sides and the Chinese [[People's Volunteer Army]]'s entry into the war, the [[s:Korean Armistice Agreement|Korean Armistice Agreement]] returned the peninsula to the status quo in July 1953.