Today was the 160th anniversary of the Battle of Gaines' Mill

Better known to lay people as Robert E. Lee's first ever victory. As the sun began to set on the evening of June 27, 1862, some 57,000 Confederates made a massive frontal assault against the Union army's Fifth Corps (under the command of Major General Fitz John Porter). Porter's men held their ground for a while but soon the massive weight of Confederate numbers began to tell and the Union line began to break before collapsing entirely. Though beaten, the Federals retreated in good order to the south and east as darkness prevented Lee from following up with a decisive blow against the Army of the Potomac.

Losses in the battle were high. The Confederate army suffered 1,483 men killed, 6,402 men wounded, and a further 108 listed as missing or captured. A grand total of 7,993 overall casualties. The Federals, playing defense, lost some 1,005 men killed, another 3,107 wounded, and would also report 3,236 men missing or captured. A grand total of 7,337 total casualties.

The YouTube channel Warhawk has a pretty good half-hour long video describing the action:

YouTube - ACW: Battle of Gaines' Mill