Signal Corps

A New Sign Language for Deaf-Mutes

Feb 26, 1851

Dr. Myer enters the Military

Jan 1, 1854

Civil War

Period: Apr 12, 1861 to May 9, 1865

Telegraphs

Jun 1, 1862

National Weather Service

Feb 9, 1870

Pigeons

Jan 1, 1878

Spanish-American War

Period: Apr 1, 1898 to Aug 1, 1898

World War I

Period: Jun 28, 1914 to Nov 11, 1918

Army Air Service

Jul 18, 1914

Radar Demonstration

May 1, 1937

United States enter World War II

Period: Sep 1, 1941 to Sep 2, 1945

Korean War

Period: Jun 25, 1950 to Jul 27, 1953

Vietnam War

Period: Nov 1, 1955 to Apr 30, 1972

Satellites

Jan 1, 1981