During world war ii, approximately women served in the united states armed forces in noncombatant roles.

200,000 women served in the USA military  in non-combatant role in ww2. it was the first time that women were involved in the military. A number of women died in the battles some from enemy fire. The USA decided to discontinue women service as the public would hear none of it.

Almost 400,000

Places in which women served: 
The Army and Navy Nurse Corps
Women's Army Corps (WAC)
Army Air Forces
The Navy's Women Accepted for Volunteer Emergency Service (WAVES)
The Marine Corps Women's Reserve
The Coast Guard (known as SPARS)

Source:  Women in Military Service For America Memorial Foundation