muster

Noun

• compulsory military service

• a gathering of military personnel for duty
  • he was thrown in the brig for missing muster
    

Verb

• call to duty, military service, jury duty, etc.

• gather or bring together
  • muster the courage to do something
    
  • she rallied her intellect
    
  • Summon all your courage
    

Related words

• Synonyms: 
  conscription , draft , selective service , rally , summon , come up , muster up