It was 1902, and women don’t have as many rights as men. Despite this, a woman had managed to disguise herself as a man in order to protect her sick father from having to be drafted.

You have not really a female body so it's not hard to hide the fact that you are woman...and your chest is always cover in bandages under your shirt so nothing could be seen

The bugle horn goes off and all the cadets are getting ready for roll call.

Captain Levi Ackerman walk through the lines