CMC's Message for the 236th Birthday The Carroll County Detachment will celebrate the 236th Birthday of the United States Marine Corps with the Baltimore Detachment and / or the Gettysburg Battlefield Detachment.  See the News and Events Page for details and Contact Info. We will also celebrate with the Ssgt. Karl G. Taylor Detachment (Howard County) on 13 November at Ellicott Mills Brewing Company from 1300-1600 hours