I found this in another article:
His military career began in August 1942, when, military records show, the 21-year-old farmer from New Albin, Iowa, enlisted. He became a rifleman in the 3rd Battalion, 26th Infantry Regiment, 1st Infantry Division and was in Europe from March 1944 to October 1945.
Hahn was at the Normandy invasion and campaigns in northern France, the Rhineland and Central Europe, records show, and he earned his Bronze Star for heroic achievement in the battles near Caumont on June 28, 1944.
In that campaign, the village was captured by U.S. troops July 1, 1944, less than a month after D-Day. The town was used as a starting point for Operation Bluecoat, which sought to push the occupying German army south toward Vire. The objective was to attract a counterattack, which would weaken the German line. The operation was a success, records show. It was during this engagement that Hahn earned his Bronze Star. Specifics about his actions were unavailable.
He was wounded in September 1944 and again in April 1945, records show.
He was discharged in October 1945, but re-enlisted four years later and restarted a military career that lasted until 1967. During that time, he served in Japan, Korea and again in Germany.