Uh... Star Wars?
Oh, And my Music:
The Beatles
Europe
Green Day
The Offspring
Sick Puppies
Megadeth
Blink 182
Journey
Rise Against
ACDC
Chicago
Simon and Garfunkle
Neil Young
BON JOVI
Aerosmith
And mostly anything before the 90's
So realize this may have been misleading, you can join the military at 16 but they won't put you in any combat situations or at least that's why I have gathered in JROTC. Thank you skull buster.
And 21 to (legally) drink booze. "Thanks for taking a bullet to the leg for America and successfully holding a vital position, but no celebratory beer for you."