What the song that played at the end of the film?

Was that "hail to the chief"? or not?well,that music score was only played once,at the end of this film (after julie christie and richard gere engaged in intimate chat..and the music was on) sorry for my ignorance,i'm not american and i never knew the title or the singer but,i often hear this marching band are played in american movies.. i mean,it does ring a bell,sounds very familiar..but,i'm not sure what that is? was that an anthem for president candidate campaign? or for military "parade"? anyone can help me? thanks

MOST ORIGINAL FILMMAKERS & PIONEER :
STANLEY KUBRICK
QUENTIN TARANTINO
DAVID LYNCH