Your country is going into war, so they forced all men to enlist into the military if they were above the age of 21. The women had to participate in either joining the military, or prepare all sorts of stuff and take part in the war to support their country, whether they liked it or not. It was rare a woman joined the military.

“LINE UP! NOW. TRAINING IN SESSION.” he came by each room, banging on each door. Along with a few other higher ranks.