Milloy would subsequently serve as an infantry platoon leader in Camp Blanding, Florida, prior to the U.S. entering World War II in 1941.

[2] Seeing action in the Mediterranean and Western European Theater, Milloy would serve as the commander of Company C, 504th PIR, seeing combat in Italy, France, the Netherlands, and Germany.

He would conduct three combat jumps with the 82nd Airborne Division, and be awarded the Silver Star for actions in Altavilla Silentina, Italy.

[4] Commanding the 2nd Battalion of the 38th Regiment, he led his men through the Chinese spring offensive, the Punchbowl, and Heartbreak Ridge, and be awarded two more Silver Stars.

[8] On 21 March 1970 he was appointed commander of the 23rd Infantry Division, replacing Major General Lloyd B. Ramsey, who had been injured in a helicopter crash.