From the American Battlefield Trust 2022 September Calendar.
SEPTEMBER 1, 1862
** Battle of Chantilly, Virginia
SEPTEMBER 2, 1864
** Atlanta, Georgia, falls to Federal forces
SEPTEMBER 14, 1862
** Battle of South Mountain Gap, Maryland
SEPTEMBER 15, 1862
** Capture of Harpers Ferry, Virginia (now West Virginia)
SEPTEMBER 17, 1862
Battle of Antietam, Maryland
--Old Secesh
From Wikipedia.
Formerly named Fort Massachusetts, was part of extensive fortifications built to protect Washington, D.C., during the Civil War.
Originally built in 1861, but expanded and renamed Fort Stevens after Brigadier General Isaac Ingalls Stevens, who was killed at the Battle of Chantilly, Virginia, on September 1, 1862.
In 1861, it had a perimeter of 168 yards and embrasures for ten cannons. In 1862, it was expanded to 375 yards and 19 guns. It guarded the northern approach to the city along 7th Avenue. By 1864, it was part of a thirty-seven mile long arrangement of fortifications consisting of sixty-eight forts to defend the capital city.
After the Union defeat at the First Battle of Bull Run, the defenses of Washington, D.C., consisted of just one fort, Fort Washington, located some twelve miles south on the Potomac River. Eventually there would be 68 forts, 93 batteries, 20 miles of rifle pits and 32 miles of military roads.
--Old Secesh
So, the last battle the 87th participated in was at Chantilly and that was on September 1, 1862 and Antietam wasn't until September 17. So, not likely Thomas Aumack was wounded at Antietam, perhaps Chantilly.
Plus, the 87th ceased to exist on September 6 when it was folded into the 40th New York Infantry.
So, what about this Battle of Chantilly. I don't think I've heard of it before.
Looked it up in good old Wikipedia, and it said it was a follow up to the Second Battle of Bull Run and was where Stonewall Jackson's Corps of the Army of Northern Virginia attempted to cut off the Union retreat.
Union losses were put at 1,300 and Confederate at 800.
Could one of those Union casualties been the wounded Thomas Aumack?
--Old Secesh
Continuing with detailed service of the 87th New York:
All dates 1862
JUNE 25-JULY 1: Seven Days before Richmond
JUNE 25: Battle of Oak Grove
JULY 1: Battle of Malvern Hill
UNTIL AUGUST 16: At Harrison's Landing
AUGUST 16-26: Movement to Fort Monroe and then to Centreville, Virginia
AUGUST 26-SEPTEMBER 2: Pope's Campaign in Northern Virginia
AUGUST 27: Action at Bristoe Station, or Kettle Run
AUGUST 27: Buckland's Bridge, Broad Run
AUGUST 29: Battle of Groveton
AUGUST 30: Second Battle of Bull Run
SEPTEMBER 1: Battle of Chantilly
--Old Secesh
