>> reporter: 399 soldiers started ranger training this week. 19 of them were women. the first time the notoriously tough course has been open to females. they're all mixed together, but you can pick out the women. their hair is closely cropped, while the men's heads are shaved.s the army took these pictures and wouldn't allow us to identify or talk to the women. they tend to be smaller than the men, but that didn't matter when it came to the battle carry. >> i got you!i i got you! >> reporter: this is just the first week of a 62 day course designed to replicate theof constant stress, lack of food,de and sleep deprivation of combat. less than half the men can beal expected to make it all the way through. no one knows how the women will do. first, they have to pass a fitness test which includes a five-mile run in 40 minutes and 49 push-ups in two minutes. o the officers in charge of the course say the women themselves have insisted that standards not be lowered to accommodate them. this 12-mile foot march has to