In summary, there are 165 service records for McMs. in the Civil War. About 70 of these are for the confederate armies and 105 are for the Union forces- including 10 entries for the Colored Regiments. The majority of the Confederate soldiers came from Missouri (14), Tennessee (15), Texas (10), Arkansas (8), Alabama (7), and Mississippi (5). The majority of the Union soldiers came from Pennsylvania (28), Illinois (22), Indiana (13), New York (11), and Kentucky (6). The soliders serving in the Colored Regiments came from Kentucky and Mississippi.
Copies of war records are available from the National Archives, Washington D.C. All they need is the name of the soldier and the state of service for them to check to see if a given McM. served in the War and to make a copy of their record.
David McMurtrie Gregg, whose mother was a McMurtrie, is one of four large statues on the Pennsylvania Monument at Gettysburg. Two of the other statues are of Abraham Lincoln and Governor Andrew Curtin. Gregg was an officer during the Battle of Gettysburg.
Ref: civilwar.htm Sept 93