 Complete the following phrase:  In 1846 Blakes regiment, originally commanded by David E. Twiggs, participated in the Battle for Mexico City under command of Edwin Vose Sumner. Grouped into the Brigade of Dragoons under Col. William S. Harney the regiment and Captain Blake participated in the battles of Cerro Gordo, Puebla, Contreras, Molino del Rey, Chapultepec and the 