Getting back on-topic: (which was my fault )

Besides the aforementioned 79th New York, another Federal "Scottish" unit was the 12th Regiment Illinois Volunteer Infantry, known as the "1st Scotch Regiment", commanded by John MacArthur, a native of Erskine, Scotland. MacArthur commanded the Chicago Highland Guards, a pre-war militia unit.

The 12th Illinois only wore a "Scotch bonnet" as part of its uniform.

The Colonel of the 12th shares his surname with one of the most famous Scottish-Americans to serve in the war, Arthur MacArthur of the 24th Wisconsin Infantry, and father to General Douglas MacArthur. Arthur received the Medal of Honor for actions on Missionary Ridge during the Battle of Chattanooga:

http://www.spanamwar.com/macarthur.htm

As young Arthur charged up the ridge, he shouted "On, Wisconsin!" One of my g-g-grandfathers (in the 75th Illinois Regiment) followed behind the 24th, successfully driving the rebels from their positions. MacArthur later served during the Indian Wars and in the Philippines before dying of a heart-attack while attending a reunion of his late regiment.

His father, also Arthur MacArthur, was a Scottish immigrant of "double-distilled" heritage, as he noted that both of his parents were MacArthurs, and an active member in the Milwaukee Scottish expatriate community.

On the Southern side, a noted Scots expatriate was Sgt. William Watson of the 3rd Louisiana Infantry:

http://www.lsu.edu/lsupress/bookPage...807120156.html

The 3rd played an important role in the battle where I worked, Wilson's Creek. Opposing the 3rd was Andrew Young McDonald, the "fighting plumber" of Dubuque, Iowa:

http://www.aymcdonald.com/about_history.cfm

http://www.encyclopediadubuque.org/i...C_Andrew_Young

Regards,

Todd