The army is larger than the other services combined with approximately 56,780 active duty personnel, consisting of six infantry brigades, a combat support brigade, and a combat service support brigade. The air force operates two main bases, one in the southern region near Santo Domingo and one in the northern region near Puerto Plata. The navy operates two major naval bases, one in Santo Domingo and one in Las Calderas on the southwestern coast, and maintains 12 operational vessels. The Dominican Republic has the largest number of active military personnel in the Caribbean region surpassing Cuba.