October 27, 1864 is remembered at Petersburg for two big battles: Boydton Plank Road southwest of the city and Fair Oaks/Darbytown Road east of Richmond. But that same night, in the trenches east of Petersburg, there was a small fight that I think is one of the more remarkable episodes of the siege.
With Lee's attention pulled to both flanks, Meade had Nelson Miles's Second Corps division probe the Confederate lines in its front to see how thin they'd gotten.
Opposite Fort Morton, near the Crater, the picket lines were only about 40 paces apart. Just at dark, 100 men of the 148th Pennsylvania under Capt. Jeremiah Z. Brown went forward carrying axes. They chopped through the chevaux-de-frise and charged a small one-gun work the Federals called "Fort Crater" in two columns.
The gun never fired. The Confederates apparently took the attackers for deserters coming into their lines. Most of the garrison fled, and Brown's men came away with 17 prisoners from Wise's Virginia brigade, including the colonel and lieutenant colonel of the 46th Virginia.
Then it fell apart. The supports, the 26th Michigan, arrived too late, and a Confederate counterattack retook the work. According to Brown, Miles told him the next day that he had never expected the attack to succeed, that it was meant only as a demonstration, and that he had considered the men a forlorn hope and a sacrifice. Brown received the Medal of Honor in 1896.
A second raid the same night, by 130 men under Lt. Col. D. F. Burke of the 88th New York, took about 200 yards of picket line at "The Chimneys" opposite Fort Sedgwick before pulling back with 8 prisoners as Wallace's South Carolinians prepared to counterattack. Total Union losses for both: 4 killed, 25 wounded, 38 missing.
Nothing changed hands in the end, but it's a striking glimpse of how stretched Lee's lines were by late 1864, and of how close and strange trench warfare at Petersburg could be.
Sources if you want to dig in: Miles's report (OR Vol. 42, Part 1, Report #19); Brig. Gen. William H. Wallace's Confederate report (OR Vol. 42, Part 1, Report #365); J. W. Muffly, The Story of Our Regiment: A History of the 148th Pennsylvania Vols. (1904), pp. 800-805; and Austin C. Brightman Jr., "Glory Enough: The 148th Pennsylvania Volunteers at Fort Crater," Civil War Regiments Vol. 2, No. 2, which has an excellent map of the assault by David Woodbury.
Anyone have ancestors in the 148th PA, 88th NY, or Wise's or Wallace's brigades? And does anyone know of other cases where an attack succeeded because defenders mistook the attackers for deserters?