de México, Guerrero, Jalisco, Veracruz and Yucatán in the summer of 2021 to deal with the aftermath of torrential rains and hurricanes.) Infantry battalions are small, each of approximately 400 troops, and are generally deployed in each zone. Certain zones are also assigned a light armored cavalry regiment, mechanized infantry regiment or one of the 24 field artillery regiments and 10 field artillery battalions. Smaller detachments are often detailed to patrol more inaccessible areas of the countryside, helping to maintain order and resolve disputes. Other than the Special Forces and the Military Police Brigades, the Mexican Army includes the following combat brigades: armored - four Armored Brigades (sing.: Brigada blindada), each composed of two armored reconnaissance regiments, two mechanized regiments and smaller support units. A ninth armored reconnaissance regiment under the Army HQ functions as the training unit. 1st Armored Brigade (1/a. Brigada Blindada - Temamatla (Teotihuacán), State of Mexico (brigade patch shows the formation belongs to the 1st Army Corps (1/er. Cuerpo de ejército - ICE)) 2nd Armored Brigade (2/a. Brigada Blindada) - Querétaro City, Querétaro (directly subordinated to Army HQ) 3rd Armored Brigade (3/a. Brigada Blindada) - Puebla (city), Puebla (directly subordinated to Army HQ) 4th Armored Brigade (4/a. Brigada Blindada) - Villagrán (Sarabia), Guanajuato (directly subordinated to Army HQ) infantry - three separate infantry brigades under 1st Army Corps and three light infantry brigades directly under army HQ. Each brigade has three infantry battalions. The light brigades lack the organic artillery and engineer units of the separate brigades. 1st Separate Infantry Brigade (1/a. Brigada de Infantería Independiente) - Colonia Santa Teresa, State of Mexico 2nd Separate Infantry Brigade (2/a. Brigada de Infantería Independiente) - Campo Militar No.1 - Mexico City 3rd Separate Infantry Brigade (3/a. Brigada de Infantería Independiente) - Campo Militar No.1 - Mexico City 4th Light Infantry Brigade (4/a. Brigada de Infantería Ligera) - Irapuato, Guanajuato 5th Light Infantry Brigade (5/a. Brigada de Infantería Ligera) - Ixcotel, Oaxaca 6th Light Infantry Brigade (6/a. Brigada de Infantería Ligera) - Campo Militar No.1 - Mexico City airborne Parachute Rifle Brigade (Brigada de Fusileros Paracaidistas) - Campo Militar No.1 - Mexico City (directly subordinated to Army HQ) engineers 1st Combat Engineer Brigade (1/a. Brigada de Ingenieros de Combate) - Campo Militar No.1 - Mexico City (subordinated to the 1st Army Corps) Special Forces Corps The Army has a Special Forces Corps unified command with 3 Special Forces Brigades,