“Signed on June 12, 1948, the Women’s Armed Services Integration Act legally permitted women to serve in the U.S. Armed Forces in a number of official capacities. Most importantly, the act allowed women to serve in all four branches of the military. Previously, women serving in the military could enlist as volunteers in clerical positions or work as nurses, though Congress did briefly give the Women’s Army Corps full army status during WWII.”
https://www.trumanlibraryinstitute.org/truman-and-womens-rights/