Nouns

(n)mustera gathering of military personnel for duty“he was thrown in the brig for missing muster”
(n)conscription, muster, draft, selective servicecompulsory military service

Verbs

(v)muster, rally, summon, come up, muster upgather or bring together“muster the courage to do something”, “she rallied her intellect”, “Summon all your courage”
(v)mustercall to duty, military service, jury duty, etc.