In 1927, Private Train placed first among army enlisted men competing for admission to the United States Military Academy at West Point.

[1] Later during World War II, Train served in the Italian campaign in 1943 for several months and then, in October 1944, he joined the 28th Infantry Division fighting on the Siegfried Line.

After suffering devastating losses, the 28th Division was moved to a quiet sector of the front line in northern Luxemburg and southern Belgium.

His regiment held its position for the first two days of the attack against overwhelming odds and then participated in the defense of St. Vith in southern Belgium, a key road junction.

Two days earlier, on December 24, Train's regiment—which had become surrounded by the German forces—was able to safely withdraw to the new American lines with the rest of the St. Vith defenders.

[2] Later in his career, Train commanded the 4th Infantry Division from 1960 to 1962, the United States Army War College from 1962 to 1964.