Cortina retreated up the Rio Grande, until on December 27, 1859, Heintzelman and Ford engaged him in the Battle of Rio Grande City. Cortina's forces were decisively defeated, losing sixty men and all their equipment. Pursued and defeated again by Ford few days later, Cortina retreated with his men into the Burgos Mountains. The First Cortina War was mostly finished, and with increasing pressure from both the United States and Mexican Governments to cease all hostile activities, Cortina remained away from the scene for more than a year. The final engagements of the war were the Battle of La Bolsa, on February 4, 1860, and the Battle of La Mesa, on March 17. The Texas Rangers, under Ford, successfully defended their riverboat in the first engagement and routed the Cortinistas across the river at La Mesa, Tamaulipas.