The Cavaliers Drum and Bugle Corps (also known as the "Cavies" and "The Green Machine") is a World Class (formerly Division I) competitive junior drum and bugle corps. Based in Rosemont, Illinois, the Cavaliers was one of the thirteen founding member corps of Drum Corps International and is a seven-time DCI World Champion. The Cavaliers is one of only two remaining all-male corps, with the other being the Madison Scouts.

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