Here is some history of the 10th Louisiana Infantry

After this battle [Malvern Hill, July 1, 1862], General Lee created a second Louisiana brigade, under Brig. General William Starke. The 10th joined this brigade, along with the 1st, 2nd, 9th and 15th Louisiana regiment and also Coppen's Louisiana Zouave Battalion. . . .

. . . . The Army received orders on June 5, 1863 to break camp. They were on the
move again. The respite since Chancellorsville had seen the ranks of the 10th
Louisiana rise to something over 250 men.

The Corp (Ewell's) reached Winchester, Va. the evening of June 13th. On
the 14th June, 1863, they assaulted the Federal forces there and forced them
to retreat. The 10th suffered no casualties at 2nd Winchester, but they did
capture about 200 prisoners and a stand of Colors. Following this battle, the
Corp again marched north. On the 20th of June, they passed through Sharpsburg,
Maryland, by the 24th of June, they were a couple of miles out of
Chambersburg, Pa. They rested on the 25th, resumed the march on the 26th and
evening of the 27th found them 4 miles south of Carlisle, Pa. By the 30th of
June, they were in Scotland, Pa., where word reached them of a big fight
brewing in a little town called "Gettysburg". They departed for there in haste
on the morning of July 1st, 1863. By the time they reached Gettysburg, the
first days battle was over. They were put into the line in front of a rise
known as Culp's Hill. The battle here on July 2nd and 3rd would cost the 10th
Louisiana more casualties then any other battle they engaged in- past or
future. Of the 250 men in the Regiment, 149 were casualties--24 dead, 27
wounded, 47 wounded and captured, of whom 8 would die in Federal hospitals,
and 51 captured.

After Gettysburg, Brig. General Leroy Stafford was given command of the 2nd Louisiana Brigade.
http://files.usgwarchives.net/la/state/military/wbts/units/lavol10.txt