Seeing as i am currently in the military and judging from experience with working with female sailors. They do the same jobs that men do and the jobs that men do in the Navy aren't easy at all. In fact, there have been some instances where women have done jobs better than men. For example, In the US Navy there is a job called Gunners mate. We we have some pretty large sized weapons that they carry around and do things with...Well TRUE STORY, there was this guy on my ship who was supposed to be taking the guns from the maindeck down to the Armory. Well he was having some trouble carrying two at a time...this girl smaller than he was...took both weapons from him, and carried them the rest of the way...with no problem....
Women can do just as much as men can these days, I actually enjoy being in the Navy with women, it also keeps things interesting because 300+ men at sea for 8 months is not good...throw some women in there...