United States, Mexican War Index and Service Records, Pennsylvania Units

{| class="wikitable" ! Infantry !! Company !! Date Mustered in !! Location !! Date mustered out !! Location
 * First || A || December 16, 1846 || Pittsburg || ||
 * First || B || December 15, 1846 || Pittsburg || July 27, 1848 || Philadelphia
 * First || C || December 17, 1846 || Pittsburg || July 29, 1848 || Philadelphia
 * First || D || December 14, 1846 || Pittsburg || July 31, 1848 || Philadelphia
 * First || E || December 14, 1846 || Pittsburg || August 5, 1848 || Philadelphia
 * First || F || December 15, 1846 || Pittsburg || July 28, 1848 || Philadelphia
 * First || G || December 17, 1846 || Pittsburg || July 29, 1848 || Philadelphia
 * First || H || December 16, 1846 || Pittsburg || July 29, 1848 || Philadelphia
 * First || I || December 16, 1846 || Pittsburg || July 20, 1848 || Philadelphia
 * First || K || December 16, 1846 || Pittsburg || July 25, 1848 || Pittsburg
 * Second || A || January 5, 1847 || Pittsburg || July 21, 1848 || Pittsburg
 * Second || B || January 3, 1847 || Pittsburg || July 14, 1848 || Pittsburg
 * Second || C || January 3, 1847 || Pittsburg || July 20, 1848 || Pittsburg
 * Second || D || January 4, 1847 || Pittsburg || July 14, 1848 || Pittsburg
 * Second || E || January 1, 1847 || Pittsburg || July 14, 1848 || Pittsburg
 * Second || F || December22, 1846 || Pittsburg || July 15, 1848 || Pittsburg
 * Second || G || January 2, 1847 || Pittsburg || July 20, 1848 || Pittsburg
 * Second || H || January 4, 1847 || Pittsburg || July 12, 1848 || Pittsburg
 * Second || I || January 4, 1847 || Pittsburg || July 20, 1848 || Pittsburg
 * Second || K || January 1, 1847 || Pittsburg || July 12, 1848 || Pittsburg
 * Second || L || May 26, 1847 || Pittsburg || July 14, 1848 || Pittsburg
 * Second || M || May 18, 1847 || Pittsburg || July 2, 1848 || Pittsburg
 * Second || B || January 3, 1847 || Pittsburg || July 14, 1848 || Pittsburg
 * Second || C || January 3, 1847 || Pittsburg || July 20, 1848 || Pittsburg
 * Second || D || January 4, 1847 || Pittsburg || July 14, 1848 || Pittsburg
 * Second || E || January 1, 1847 || Pittsburg || July 14, 1848 || Pittsburg
 * Second || F || December22, 1846 || Pittsburg || July 15, 1848 || Pittsburg
 * Second || G || January 2, 1847 || Pittsburg || July 20, 1848 || Pittsburg
 * Second || H || January 4, 1847 || Pittsburg || July 12, 1848 || Pittsburg
 * Second || I || January 4, 1847 || Pittsburg || July 20, 1848 || Pittsburg
 * Second || K || January 1, 1847 || Pittsburg || July 12, 1848 || Pittsburg
 * Second || L || May 26, 1847 || Pittsburg || July 14, 1848 || Pittsburg
 * Second || M || May 18, 1847 || Pittsburg || July 2, 1848 || Pittsburg
 * Second || G || January 2, 1847 || Pittsburg || July 20, 1848 || Pittsburg
 * Second || H || January 4, 1847 || Pittsburg || July 12, 1848 || Pittsburg
 * Second || I || January 4, 1847 || Pittsburg || July 20, 1848 || Pittsburg
 * Second || K || January 1, 1847 || Pittsburg || July 12, 1848 || Pittsburg
 * Second || L || May 26, 1847 || Pittsburg || July 14, 1848 || Pittsburg
 * Second || M || May 18, 1847 || Pittsburg || July 2, 1848 || Pittsburg
 * Second || K || January 1, 1847 || Pittsburg || July 12, 1848 || Pittsburg
 * Second || L || May 26, 1847 || Pittsburg || July 14, 1848 || Pittsburg
 * Second || M || May 18, 1847 || Pittsburg || July 2, 1848 || Pittsburg
 * Second || M || May 18, 1847 || Pittsburg || July 2, 1848 || Pittsburg
 * Second || M || May 18, 1847 || Pittsburg || July 2, 1848 || Pittsburg