The 10th Louisiana fought in many engagements of the Army of the Northern Virginia from the Battle of Williamsburg to the Battle of Cold Harbor. At the Battle of Gettysburg in July 1863, the regiment was part of the brigade of Col. Jesse Williams and participated in a series of unsuccessful attacks on Union entrenchments on Culp's Hill. Later, the 10th was part of the Mine Run and Bristoe campaigns.
The field officers were Colonels Antoine James de Marigny, Henry D. Monier, and Eugene Waggaman; Lieutenant Colonels Jules C. Denis and J. M. Legett; and Majors Felix Dumonteil, Thomas N. Powell, and William H. Spencer.
^Brooks, Thomas Walter; Jones, Michael Dan (1995). Lee's Foreign Legion: A History of the 10th Louisiana Infantry. Gravenhurst, Ontario, Canada: Watts Printing.
^Jones, Terry L. (1987). Lee's Tigers Revisited. Baton Rouge, Louisiana: LSU Press. p. 404. The regiment was comprised of men from 21 nations (only three of the companies were predominantly Anglo-American) and most were farmers, laborers, and sailors. Of those giving a place of birth, 170 were born in Louisiana; 71 in states outside of Louisiana; 249 in Ireland, 84 in the Germanic states; 44 in France; 26 in Italy; 24 in England; 20 in Spain; 9 in Canada; 7 each in Austria, Greece, and Mexico; 4 in Portugal; 3 in Sicily; 2 in Norway; 1 each in Corsica, Cuba, Martinique, Russia, Sardinia, and Switzerland