 Complete the following phrase:  Coulter enrolled in the Westmoreland Guards, a local militia company that was mustered into the United States Army as Company E of the Second Pennsylvania Volunteer Infantry Regiment. It was one of only two regiments sent from Pennsylvania to serve in Mexico. Coulter saw action under General Winfield Scott in the Siege of Vera Cruz and the subsequent battles of Cerro Gordo, Contreras, Churubusco, and Chapultepec, and the 