Sears, Berry H., Pvt. Co. K, 19th La. Inf. En. Feb. 13, 1862, Camp Benjamin. Roll May and June, 1862, Present, elected 1st Sergt. May 12, 1862. Roll July and Aug., 1862, Present, elected 1st Sergt. May 12, 1862, Elected 2nd Jr. Lt. July 24, 1862. Assigned to duty by Col. Reischard at Tupelo, July 31, 1862. Roll Sept. and Oct., 1862, Present. Roll Nov. and Dec., 1862, Absent, promoted 2nd Lt. Nov. 21, 1862, order of Col. Tatnall, A. Brig. Gen. Rolls Jan., 1863, to Oct., 1863, Present. Roll Nov. and Dec., 1863, Absent, wounded, since Nov. 26, 1863, order of Surgeon. Roll Jan. 1 to April 30, 1864, Present. Roll May 1 to Aug. 31, 1864, Absent at Hospl. at Montgomery since June 5, 1864, order of Asst. Surgeon. Roll Sept. 1, 1864, to Feb. 28, 1865, Absent on wounded furlough since Feb. 28, 1865. Roll March and April, 1865, Absent on sick furlough, order Med. Ex. Brd.
Here is a web site about the 19th - looks like data is from Art Bergeron's book on La units. http://members.tripod.com/~whittenberg/history.html
Try googling and see what else you might find.