Frank enlisted in the Army at Fall River, MA on 16 September 1940.  Pvt Cabral transferred to Co E, 508th PIR on 18 July 1944 from Hq 82nd Airborne, one of many replacement for losses in Normandy..

Pvt Cabral amongst the passengers staged at Camp Philip Morris, including many from the 749th Tank Battalion.  They sailed from Le Havre, France aboard the USAT Exchange and arrived in New York, NY on 18 September 1945.

He was discharged on 4 October 1945.  His military decorations include the Bronze Service Arrowhead awarded for the Holland campaign and Airborne operations.