September 17, 1862 · Sharpsburg, Maryland

Antietam game: the bloodiest day, hour by hour

The bloodiest single day in American history, fought in three acts from north to south. Antietam is in Civy War as a free battle and as a three-part campaign on the Antietam Battlefield Board's 1904 atlas, with troop positions by Ezra Carman.

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Burnside's Bridge on the Antietam Battlefield Board's 1904 survey, in Civy War

What you command

Four scenarios, each playable from either side. Every battle runs five minutes on the clock against a Green, Regular or Veteran enemy: the attacker has to break the line before nightfall, the defender has to hold.

Antietam

Free
September 17, 1862

The whole field at once. As the Union, push Hooker's, Sumner's and Burnside's corps across the creek and break the Confederate line. As the Confederacy, divided, outnumbered and with the Potomac at your back, hold the Sunken Road and the heights above the town until dark.

The Cornfield

Free
7:30 a.m.

Hooker's I Corps, Gibbon's Iron Brigade among it, comes down the Hagerstown Pike into Miller's cornfield and the East Woods. As the Union, take the Dunker Church plateau, with Mansfield's XII Corps coming up behind. As the Confederacy, hold the plateau and the West Woods with Jackson's thin divisions until Hood's Texans, then Law's and Wofford's brigades, can be fed in.

The Sunken Road

Historical Campaigns
10:30 a.m.

A farm lane worn waist-deep, held by Rodes's Alabamians and G. B. Anderson's brigade. As the Union, send French's division and then Richardson's, Meagher's Irish Brigade and Caldwell's and Brooke's brigades, to break the lane and take Piper's farm. As the Confederacy, hold it. Lee has nothing left to plug a break.

Burnside's Bridge

Historical Campaigns
1:00 p.m.

One stone bridge and a bluff held by Toombs's Georgians. As the Union, force the crossing with the 51st Pennsylvania and 51st New York, bring Rodman's division over, and take the Sharpsburg heights. As the Confederacy, hold until A. P. Hill's Light Division arrives from Harpers Ferry: Gregg's, Archer's and Branch's brigades and Pegram's battery reach the field in the afternoon.

The battle

In September 1862 Robert E. Lee carried the war into Maryland. George B. McClellan's Army of the Potomac caught him at Sharpsburg, along Antietam Creek, with part of Lee's army still at Harpers Ferry.

The fighting moved from north to south through the day. At dawn the Cornfield changed hands again and again; Hooker's corps was wrecked and Mansfield killed, and the Dunker Church plateau stayed in Confederate hands. At mid-morning the Sunken Road was carried after nearly four hours, when a misunderstood order pulled its defenders out; it has been called Bloody Lane ever since. In the afternoon Burnside's IX Corps carried the bridge and reached the edge of Sharpsburg, until A. P. Hill's division came up from Harpers Ferry and drove it back to the creek.

Some 12,400 Union and 10,300 Confederate soldiers were lost in one day. Lee withdrew across the Potomac, and five days later Abraham Lincoln issued the preliminary Emancipation Proclamation.

Free or paid

Mostly free. The Antietam battle and the Cornfield are free. The Sunken Road and Burnside's Bridge are part of the Historical Campaigns, a one-time purchase that also unlocks Gettysburg's second and third days and Shiloh's second day.

Thirteen battles, the Drill Field and the Field Manual are free. The Historical Campaigns, Grant's Campaigns and The Western Campaigns are optional one-time purchases that restore on every device signed in to the same Apple ID.

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Free on iPhone and iPad. Coming soon to the Mac.

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