John Harry Heckart served from May 23rd, 1903 until October 31st, 1938 within the U.S. Army and reached the rank of Captain.
Promotions:
October 17th, 1915: Corporal;
December 16th, 1916: Sergeant.
Career:
1905-1907: Troop L, 8th Cavalry Regiment;
?: Troop G, 3rd Cavalry Regiment;
?: Company E, 20th Infantry Regiment;
? Company B, 1st Field Battalion.
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