Which Union position did Hays' Louisiana Tigers attack at dusk on July 2?

Hays' Louisiana Tigers attacked East Cemetery Hill at dusk on July 2, 1863, during the second day of the Battle of Gettysburg.

The assault formed part of Confederate Lieutenant General Richard Ewell's effort to pressure the Union right while James Longstreet attacked the Union left. Major General Jubal Early ordered Brigadier General Harry T. Hays's Louisiana brigade and Colonel Isaac E. Avery's North Carolina brigade forward against the eastern slope of the hill.

Hays's five Louisiana regiments pushed through gathering darkness, overran parts of the Union line, and reached the artillery positions near the crest. The fighting became a close-range struggle involving infantry, gunners, bayonets, muskets, and even improvised cover among cemetery markers.

The attack ultimately failed. Union reinforcements, including Colonel Samuel Carroll's brigade, helped drive the Confederates from the heights. A common mix-up is Culp's Hill: Confederate forces attacked both hills that evening, but Hays's Louisiana Tigers were specifically associated with the assault on East Cemetery Hill.