Question

To force someone to serve in the military

Answer 1

Conscription ( I dont Know if I spelled that right )

Answer 2

Drafting is the present process that governments use to gain emergency recruits in times of war. In medieval and ancient times, this act was called conscripting and often involved forcibly abducting young boys from their homes and raising them to be men of war (or by forcing captured enemies to fight for them).
Hope that helped! =)