The 186th New York Infantry lost 48 enlisted men killed or mortally wounded and 1 officer and 39 enlisted men to disease during the Civil War.
|Organized at Sackett’s Harbor, N.Y. under Colonel Bradley Winslow|
|September 5||Companies A and B mustered in|
|September 7||Companies C and D mustered in|
|September 8||Companies E and F mustered in|
|September 10||Company H mustered in|
|September 17 – 21||Bradley Winslow mustered in as colonel, E. Jay Marsh as lieutenant colonel and Abram Sternberg as major|
|September 21||Company I mustered in|
|September 26||Company G mustered in at Hart’s Island, N.Y|
|September 28||Left State for Petersburg, Va.|
|September 29||Company K mustered in|
|October 1||Siege of Petersburg, Va. Attached to 2nd Brigade, 2nd Division, 9th Army Corps, Army of the Potomac|
|October 27-28||Boydton Plank Road, Hatcher’s Run|
|March 25||Fort Stedman, Petersburg|
|March 28-April 9||Appomattox Campaign|
Assault on and fall of Petersburg.
The regiment suffered severe casualties attacking Fort Mahone, losing 48 enlisted men killed or mortally wounded, 11 offiicers and 115 men wounded and 6 enlisted men missing. Colonel Winslow was wounded leading a charge the Fort, and was eventually discharged for disability.
|April 3||Occupation of Petersburg|
|April 20-27||Moved to Washington, D. C. and duty at Alexandria, Va.|
|May 23||Grand Review|
|June 2||Mustered out near Alexandria, Virginia under Lieutenant Colonel Marsh and Major Sternberg. Recruits transferred to 79th New York Infantry|