From May 3 to May 9 Gen. Francisco Mejia led 1,400 men into battle with Fort Texas. He also fought in the Battle of Monterrey which lasted from September 21 through September 24, 1846. Mejia led troops in the Battle of Buena Vista from February 21 and 22, 1847 and in Battle of Contreras August 19 through the 20th, in 1847.