The Situation: After losing touch with Gen Sumner and Sedgwick's 2nd Division of the Second Corps, who had crossed the Antietam first, General French pushed his 3rd Division forward on to the battlefield about 9:00 AM on September 17th. Angling slightly left (south) of the path of the lead division, he ran into elements of General DH Hill's Division, posted in a strong position in a sunken road at the center of the Confederate line ...
[Confederate]
12th Alabama Infantry
13th Alabama Infantry
26th Alabama Infantry
3rd Alabama Infantry
5th Alabama Infantry
6th Alabama Infantry
23rd Georgia Infantry
27th Georgia Infantry
28th Georgia Infantry
6th Georgia Infantry
Cobb's (GA) Legion, Infantry Battalion
14th North Carolina Infantry
2nd North Carolina Infantry
30th North Carolina Infantry
4th North Carolina Infantry
Macbeth (SC) Artillery
[Federal]
14th Connecticut Infantry
1st Delaware Infantry
14th Indiana Infantry
5th Maryland Infantry
108th New York Infantry
4th New York Infantry
8th Ohio Infantry
130th Pennsylvania Infantry
132nd Pennsylvania Infantry
7th West Virginia Infantry
Source: The Antietam Battlefield Board.1
1 The battlefield position studies by the Antietam Battlefield Board (1904, 1908) are described in the Atlas, and are available online from the Library of Congress.
Carman, Ezra Ayres, and Lieut. Col. Emmor B. Cope, Hays W. Mattern, Charles H. Ourand, Atlas of the Battlefield of Antietam, 14 maps, Washington DC: US Government Printing Office, 1908 [AotW citation 16899]