Definition: compulsory military service
Definition: act of assembling and putting into readiness for war or other emergency: "mobilization of the troops"
Definition: a gathering of military personnel for duty
Usage: he was thrown in the brig for missing muster
Definition: call to duty, military service, jury duty, etc.
Definition: order, request, or command to come
Usage: She was called into the director's office; Call the police!
Definition: gather or bring together
Usage: muster the courage to do something; she rallied her intellect; Summon all your courage
Definition: assemble or get together
Usage: gather some stones; pull your thoughts together