Wikipedia has a nice little summary here, but basically this is the day where we should be taking a moment to honor those men and women who have died in service to our country. Wear your red buddy poppy, white poppy, polka dot poppy, I don't care. Just do something.
For me, I believe that as Americans, we don't always have to agree with the war/military action, but it should always be our honor to support the people who care enough to fight for our right to disagree. Freedom is never free!
Thank you to those in service. God bless you!