Note 48 — MEXICAN WAR DIARY OF GEORGE B. McCLELLAN 1846-1847
Reading edition
General Pillow’s brigade consisted of four regiments of infantry,—1st Tennessee (Colonel Campbell), 2nd Tennessee (Colonel Haskell), 1st Pennsylvania (Colonel Wynkoop) and 2nd Pennsylvania (Colonel Roberts); also a detachment of Tennessee Horse and a company of Kentucky Volunteers under Captain Williams. R. Semmes, Service Afloat and Ashore, page 179.