draftee; conscript
Refers to a person who has been called up for military service. This is a formal, somewhat dated term, primarily used in historical or legal contexts.
戦時中、多くの応召者が前線へ送られた。
During the war, many draftees were sent to the front lines.
Compound of 応召 (responding to a call-up) and 者 (person). The exact historical derivation is uncertain, but the term is conventionally associated with military conscription.