This puts limits on the membership, but anyone with a desire and a belief in God can become a part of the Masonic Family. Shrine drum and bugle corps exist nationwide. I personally know of corps from Illinois, Missouri, Texas, Ohio, Massachusetts, and Florida as well as Canada. The age requirements for shrine corps are limited by the prerequisites for becoming a Mason. This requirement was recently reduced from the age of 21 to 18.
Most corps are rather small, averaging about fifty members.
Of these sixty, around forty are in the horn line, fifteen in the drum line and only five in the color guard. We only use an American flag section. As for the world not knowing we existed, I know that the Ainad Drum Corps has been around since at least 1923. I've seen pictures of our corps. Ainad is composed of men from all walks of life and varying levels of experience.