A great start :)
The low registers sound too muddled, in my opinion. You should consider having perhaps some French horns or instead use a string ensemble spread out across several octaves for a stronger effect. You might want to consider using a snare drum and cymbals in there, it would lend to the song quite nicely. The break before the end is odd, but I reckon it's a choice of style.
A lovely piece. I find it very honorable and kind of you to embark on writing a piece for this day. As I'm American, we have our own Veteran's Day which is similar, and I can relate to the respect deserved by those who serve and have served.
Best of luck,
-Samulis