muster (v)

Definition: call to duty, military service, jury duty, etc.

muster (n)

Definition: a gathering of military personnel for duty
Example: he was thrown in the brig for missing muster.

conscription (n)
draft (n)
muster (n)
selective service (n)

Definition: compulsory military service

summon (v)
rally (v)
muster up (v)
muster (v)
come up (v)

Definition: gather or bring together
Example: muster the courage to do something. she rallied her intellect. Summon all your courage.