Brewer.

Herbert Brewer to be more exact. And yes, like most people, I thought it was Edward Elgar at first.
Compare:
Brewer, Marche Heroique.
Elgar, Imperial March. Or rather, maybe this.
Similar, right? Or maybe you just need to be familiar with Elgar's music to notice it.
*EDIT* What? Elgar isn't in my spellcheck? Oh NOES!