muster

(noun) a gathering of military personnel for duty. Example: "He was thrown in the brig for missing muster."

(noun) compulsory military service. Synonyms: conscription, draft, selective service.

(verb) gather or bring together. Synonyms: rally, summon, come up, muster up. Examples: "Muster the courage to do something." "She rallied her intellect." "Summon all your courage."

(verb) call to duty, military service, jury duty, etc..