Statistics for occurrence #1 of “South Mountain, Md.” in chapter 17 of Frederick H. Dyer, Compendium of the War of the Rebellion: Regimental Histories:

...ty at Maryland Heights till October 13, and on the Upper Potomac till December 10. At Bolivar Heights till April 7, and at Maryland Heights till June 30. Moved to Monocacy Junction, thence to South Mountain, Md. , June 30-July 6. Pursuit of Lee July 6-24. Wapping Heights, Va., July 23. Camp near Bealton August 1-September 15, and on Culpeper and Warrenton Pike till October 10. Bristoe Campaign...
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