The 18th New York Infantry Regiment lost 4 officers and 34 enlisted men killed or mortally wounded and 1 officer and 32 enlisted men to disease during the Civil War.

1861
May 13 Organized at Albany, N.Y., and accepted for state service under Colonel William A. Jackson, Lieutenant Colonel William H. Young and Major George R. Myers
May 17 Mustered in for two years Federal service
June 19 Left State for Washington, D. C.; Attached to Davies’ Brigade, Miles’ Division, McDowell’s Army of Northeast Virginia
July 14 Reconnaissance on Fairfax Road
July 16-21 Advance on Manassas, Va.
July 17
Fairfax Court House

The regiment lost 1 enlisted man mortally wounded and 1 officer and 2 enlisted men wounded

July 18
Blackburn’s Ford

The regiment lost 1 officer and 4 enlisted men wounded

July 21
Battle of Bull Run
August Duty in the Defenses of Washington, D.C.; attached to Franklin’s Brigade, Division of the Potomac
October 3 Skirmish at Springfield Station
October Attached to Newton’s Brigade, Franklin’s Division, Army of the Potomac
November 11 Colonel Jackson dies in Washington. Lieutenant Colonel Young promoted to colonel, Major Myers to lieutenant colonel and Captain John Meginnis of Company D to major.
1862
March Attached to 3rd Brigade, 1st Division, 1st Army Corps, Army of the Potomac
March 10-15 Advance on Manassas, Va.
April 4-12 McDowell’s advance on Fredericksburg, Va.
April 22 Ordered to the Virginia Peninsula
April 24-May 4 Siege of Yorktown (on transports); attached to 3rd Brigade, 1st Division, 6th Army Corps
May 7-8 West Point
June 25-July 1 Seven days before Richmond
June 27
Gaines Mill

The regiment lost 3 officers and 18 enlisted men killed or mortally wounded, 3 officers and 58 enlisted men wounded, and 1 officer and 42 enlisted men missing or captured

June 30
White Oak Swamp and Glendale
July 1
Malvern Hill
July At Harrison’s Landing
August 16-28 Movement to Fortress Monroe, then to Centreville
August 14 Colonel Young resigned. Lieutenant Colonel Myers was promoted to colonel, Major Meginnis to lieutenant colonel
August 29-31 In works at Centreville
September 1 Cover Pope’s retreat to Fairfax Court House
September 6-22 Maryland Campaign
September 8 Captain John Hastings of Company B mustered out to become lieutenant colonel of the 113th New York Infantry
September 14
Crampton’s Pass, South Mountain

The regiment lost 1 officer and 15 enlisted men killed or mortally wounded, 1 officer and 35 enlisted men wounded, and 2 enlisted men missing or captured

September 16-17
Battle of Antietam

The regiment was in reserve, but lost 4 enlisted men wounded.

September -October Duty in Maryland
October 30 -November 19 Movement to Falmouth, Va.
December 12-15
Battle of Fredericksburg

The regiment lost 2 enlisted men wounded

1863
January 20-24 “Mud March”
February – April At Falmouth
April 27-May 6 Chancellorsville Campaign
April 29-May 2 Operations at Franklin’s Crossing
May 3
Maryes Heights, Fredericksburg

The regiment lost 1 officer wounded and 33 enlisted men missing or captured

May 3-4 Salem Heights
May 4 Banks’ Ford
May 11 Three years men transferred to 121st Regiment New York Infantry
May 16 Moved to New York
May 28 Mustered out, expiration of term, under Colonel Myers, Lieutenant Colonel McGinnis