issue with just saying women in ww II, british women in ww II, etc, is it is very ambiguous, as in were they in military service, spies, government, resistance, war bond tours, etc.
you could just add them to the generic
[[Category: Women in World War II]]
more specific ones exist for:
[[Category: US Women's Army Corps]] (part of the US Army)
[[Category: Women's Axillary Ferrying Squadron]] (which needs to be changed to be spelled Auxiliary)
[[Category: Womens Airforce Service Pilots]] (WASP's part of US Army Air Force)
[[Category: World War II, United States Army Nurse Corps]] (part of the US Army Medical Corps)
[[Category: US Navy Women's Reserve (WAVES)]] (part of the US Navy)
there are not current ones for United States Marine Corps Women's Reserve or United States Coast Guard Women’s Reserve, better known by the acronym SPARS, but there is no reason not to make them if you have people to put into them.
Public Law 625 (the Women's Armed Services Integration Act) on June 30, 1948 integrated women into the regular services, so a separate category for them would no longer be needed since then.