Warren received the Bronze Star Medal and a Purple Heart for his participation in the battle.
Following his liberation from a German POW camp he returned to the US to recuperate and was preparing to deploy into the Pacific Theatre when the war ended.
He began attending Washington State University in 1946 where he earned his bachelor's degree in Public Speaking.
Warren became the director of the Museum of History and Industry in 1980 and remained in that position until his retirement in 1987.
[1] In his 1989 Monograph, The Day Seattle Burned, Warren correctly re-identified Victor Clairmont's cabinet shop as the source of the Seattle fire rather than the commonly attributed James McGough's paint shop on the floor above.