[49] His actions were credited with saving the lives of 28th Division soldiers who otherwise would have come under fire from the Germans.[50][51] Truman was given a dressing down by his regimental commander, Colonel Karl D. Klemm, who threatened to convene a court-martial, but Klemm never followed through, and Truman was not punished.[49]
In other action during the Meuse–Argonne offensive, Truman's battery provided support for George S. Patton's tank brigade,[52] and fired some of the last shots of the war on November 11, 1918. Battery D did not lose any men while under Truman's command in France. To show their appreciation of his leadership, his men presented him with a large loving cup upon their return to the United States after the war.[35]
The war was a transformative experience in which Truman manifested his leadership qualities. He had entered the service in 1917 as a family farmer who had worked in clerical jobs that did not require the ability to motivate and direct others, but during the war, he gained leadership experience and a record of success that greatly enhanced and supported his post-war political career in Missouri.