Captain Sheerer's and Captain Barker's Companies organized at Chicago, Ill.
Assigned to 12th Illinois Cavalry as Companies H and I, , but served detached. Attached to Stoneman's Cavalry Command, Army of the Potomac for duty in the Defenses of Washington
Moved to the Peninsula, Virginia. Attached to Blake's Brigade, Cavalry Reserve, Army of the Potomac
April to August
Peninsula Campaign. Attached to Headquarters Army Potomac
April 5-May 4
Siege of Yorktown, Va.
Battle of Williamsburg
Reconnaissance to Hanover Court House
June 25-July 1
Seven days before Richmond
Battles of Mechanicsville
Peach Orchard and Savage Station
White Oak Swamp and Glendale
Campaign in Northern Virginia
Battle of Antietam
Movement to Falmouth, Va.
Assigned to Provost Guard Army of the Potomac
Battle of Fredericksburg
At Headquarters 3rd and 2nd Divisions Cavalry Corps, Army Potomac
April 27-May 6
April 29-May 8
Brandy Station and Beverly Ford
Battle of Gettysburg
Benevola or Beaver Creek
At and near Funkstown
July 3-August 1
August 1-4 and September 7-8
Culpeper Court House
Jack's Shop, Madison Court House
Raccoon and Morton's Fords
Rejoined 12th Illinois Cavalry Regiment and moved to Chicago, Ills.