The first public reports in the United States of testing of the airborne principle by the U.S. Army with paratroopers was in a February 1929 issue of Popular Sciences page 55[permanent dead link] in an article titled "When the Sky Rains Soldiers" which stated From three speeding planes over Brooks Fields, San Antonio, Texas, a machine gun, and its crew of three soldiers dropped to earth. It was strictly an ad hoc test of principle and not a recognized official airborne unit.
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"Wiesel AWC". Tanks Encyclopedia. Archived from the original on 8 June 2015. Retrieved 7 June 2015.
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The paratroopers were dropped from Italian Caproni Ca.111 bomber-transports. Skydiving in Peru by General Alberto Thorndike Elmore