Dee ihe na-aga n'ihu na paragraf a - Ọchịagha Lockwood duziri otu ndị agha jikọtara na XII Corps na Agha nke Gettysburg na July 1863. E debere brigade ya ozugbo n'okpuru isi ụlọ ọrụ ndị agha n'oge agha ahụ, n'ihi na onye isi ndị agha na-arụ ọrụ, Brig. Gen. Alpheus S. Williams, achọghị ka onye isi ama ama na-achị 1st Division naanị n'ihi na ọ bụ okenye karịa Brig. Gen. Thomas H. Ruger. A chịkọtara brigade ahụ na ngalaba ahụ mgbe Williams laghachiri na iwu ahụ na Maj. Gen. Henry W. Slocum maliteghachiri iwu ndị agha. N'oge oyi nke 1863-64, Lockwood nyere iwu na Middle Department, na isi ụlọ ọrụ na Baltimore, Maryland. Ka oge na-aga, o duziri ndị agha na-adịru nwa oge megide Ọchịagha Jubal A. Early n'oge mwakpo ya nke July 1864. N'oge agha nke Spotsylvania Courthouse General John C. Robinson merụrụ ahụ nke ukwuu na-eduzi Ngalaba nke abụọ nke V Corps. E mechara kewaa ngalaba ahụ ma gbasasịa n'etiti ndị isi ngalaba ndị ọzọ maka oge fọdụrụ n'agha ahụ. A chịkọtara ndị agha ahụ ma nye Lockwood iwu na May 29 n'oge Agha nke Totopotomoy Creek
Ọ dị mma. Na June 2, ndị Pennsylvania Reserves nke Ngalaba nke 3 wepụrụ. E kenyere ndị agha niile fọdụrụnụ na ngalaba ahụ, yana General Samuel W. Crawford na Ngalaba nke Abụọ. Onyeisi ndị agha ahụ, Maj. Gen. Gouverneur K. Warren, zighachiri onye bụbu onye agụmakwụkwọ ahụ na Ngalaba Middle n'ihi na o cheghị na Lockwood ruru eru maka ọkwa dị elu.