Each year, the Pentagon sets aside April to celebrate the Month of the Military Child. As part of that, the Army and Air Force Exchange System celebrates Purple Up Day on April 13, and offers all kinds of exchange restaurant deals to make the day just a little tastier. The freebies are for kids 18 years or younger, and available only on April 13 while supplies last, exchange officials said in a news release. Read more about the freebies on Military.com.