The Cavaliers Drum and Bugle Corps (also known as "The Green Machine") is a World Class competitive junior drum and bugle corps. Based in Rosemont, Illinois, The Cavaliers were one of the thirteen founding member corps of Drum Corps International and is a seven-time DCI World Champion. The Cavaliers are now the sole remaining all-male corps in an activity that once was predominantly made up of "all boy" groups.

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