Jonni: Women have been able to enter the Finnish military since 1995 and attend military service in the same units as men and no major problems have been reported. I don't know what kind of rules there are for real combat situations.
Reminds me of the (minor) case of the military band prerequisites. To get into the band, you'd have to run 2800 metres in the Cooper test (I think) in addition to knowing how to play an instrument and what have you, regardless of gender. This was reported to the
tasa-arvovaltuutettu, a kind of civil servant whose job is to make sure gender equality is excercised where necessary. Apparently the people who filed the report failed to understand that equality means the same requirements apply to both genders.
Also, 250 pounds is not a ridiculous amount of weight. Even a fairly basic set of combat gear - weapons, ammunition, loaded combat harness, protective equipment, water, food and whatever else your specific task requires you to lug around, such as a radio, batteries, GPS, rangefinders or crew weapon parts - can easily tip the scale at 50 pounds and above. Add a fit man on top of that and you're golden.