Keywords: Adna R. Chaffee, Jr..jpg en Adna Romanza Chaffee Jr September 23 1884 “ August 22 1941 was a major general in the United States Army called the Father of the Armored Force for his role in developing the U S Army's tank forces 2012-10-15 13 22 44 U S War Department Unknown Military photographer PD-USGov Adna R Chaffee Jr |