There's a military piece which is played at patriotic events, and I can hum it to you.... but since you won't be able to hear me, the notes are here:
(In C)
GG (up)C C D D G......EC, CECA F.......DB C
Anyone know the name of it? It's not Land of Hope and Glory but it's that sort of thing!
As woofgang didn't say (Although he did list a couple of his pieces, a lot of American Patriotic music came from John Philip Sousa. Not being musically talented (For someone who learned the Violin at School), could it be this one (You can listen to these and more on Wikipedia)