Aaron had completed 1 year of college when he was drafted in September 1943. After his initial training he was sent to England and assigned to B Company 116th Infantry. After the D-Day landings on 6 Jun 1944, PVT Milstein fought with his unit until wounded near Saint-Lo, France on 14 Jul 1944. He died of his wound(s) on 15 Jul 1944.
PVT Milstein was repatriated and re-interred in the United Hebrew Brotherhood Cemetery in Richfield, Minnesota.