Possible Clues:

• How everything in the cup will get one into the army
• Conscription
• That would force one to be in forces
• Minor Leaguer's goal
• Summon, evoke
• Remember to enlist
• Summon; evoke
• Summon (esp. to army)
• If you get this order from the army, it'l be curtains for you after a century
• If they want you in the army, you're finished after a century