About the Marines, I've also heard that they don't have to attend basic music school out of basic training like with the other services; rather they are assigned directly to a field band for on-the-job training right away. (This is probably for the band members who enlist without having a music degree already).
Arnold (Arnie) Williams
Sterling Virtuoso Euphonium with Gold Brass bell (Capitol Pops Band, Capitol Pops Tuba Euphonium Quartet)
Yamaha YBH-831S Neo Baritone Horn (Joyous Brass, First Baritone)
Yamaha YBH-301M Marching Baritone (Ophir Prison Marching Kazoo Band and Temperance Society LMTD)
Yamaha YEP-830 Xeno Bass Trombone (Sacramento Concert Band)
Euphonium: DW Heritage 4AL (main); K&G 3D (Ophir Prison Band)
Bass Trombone: Ferguson M Series Jeff Reynolds