The Battle of San Juan Bautista was a battle in the Second French intervention in Mexico fought on February 27, 1864. Mexican Republicans were victorious and retook control of the city. The Republican forces consisted only of the Tabasquian militia from the surrounding areas ranging between 300 and 1,100 men, only half of whom were equipped with firearms the others fought with machetes.
San Juan Bautista, Capital of Tabasco was seized by the Imperialist forces on June 13, 1863, by General Marin Dating from December 2, 1863, the Republican forces started attacking the state capital from several points. Second Lieutenant Juan Morales with 30 men stood on the banks of Tinto, cut off all communication with San Juan Bautista and recruited soldiers, commander Narciso Sáenz positioned himself in San Juan Buenavista with his forty volunteers from Cunduacán and the national guard of Cárdenas, Colonel Lino Merino in Pueblo Nuevo de las Raices and Colonel Pedro Fuentes in Mazaltepec. From these points, Republicans began attacking the French in the state capital.
On January 1, 1864, Don Pedro Fuentes along with three dragoons broke into the Esquipulas church and rang its bells in defiance to the enemy fire, and following a brief shootout, returned unharmed to his camp. On the 3rd he reached the plazuela del Águila driving away some French. On the 7th Commander Narciso Sáenz prepared to march 400 infantry and 60 cavalry and a mountain cannon from Mazaltepec, and settled in Tierra Colorada on the 9th, Pedro Fuentes moved to Atasta, meanwhile Lino Merino and Juan Morales unified their forces and established headquarters in Mazaltepec.
At three in the morning on the 14th the Zaragoza section (the right), waded through a forest track to arrive directly on the left flank of the main square, taking positions in the La Punta district, the companies 1st, 2nd "Hidalgo" and auxiliaries from Juchitan, marched to join the Valle section in Tierra Colorada, which would occupy the bottom of the street Loma de los Perez, which was at the French right flank. At five o'clock in the morning, after a cavalry reconnaissance, the Republican center was detached on the National Road, to take up positions against the French center, covered by the mountain artillery composed of three pieces, two from the 4th and one from the 3rd. The rear guard was defended by a line of siege artillery behind them. The reserve constituted of the Castillo section in the Campo Santo, at the bottom of the hill of the same name.
The Mexican scout cavalry was discovered at the gates of the city by the French vanguard commanded by the former commander Antonio Castillo. The first series of shots wounded two of the Mexican lancers. The events quickly turned against the defenders whereas the cavalry company completely disrupted the Imperialist garrison, four soldiers and commander Castillo were left dead, nine taken prisoners, including an officer, who was condemned to death by martial laws.
The Imperialists concentrated the defense of San Juan Bautista around the "Principal" and the Governor's House that were barricaded and perforated with loopholes from top to bottom. These buildings were adjacent to the Comercio Street, which prolonged the trenchline squarewise. These blocks was linked internally by tunnels whose exit led to the Comercio Street. The house north of the market, which had walls pierced with loopholes onto the Esquipulas Street was occupied by the Republican center.
The first defense line was formed by buildings and trenches, with the exception of the Romano tradehouse on the Aurora street, which was equipped by light weapons. The second line were trenches, comprising four blocks immediately to the river, and besides that, the last line followed the flow of the Grijalva and Jícaro rivulets, connecting all together by ditches and exterior walls defended by loopholes. The Republican Army fully sealed the siege on the town starting from January 18 and installed five of the smaller culverins and two 24 pounder cannon around San Juan Bautista. The besieged were entrenched in the streets, along the coast, under the covering protection of two French steam gunships La Tourmente and La Pique; the Pailebot Pizarro, the steamboats Corina, Aurora and Diana and the steam gunships Conservador and Guaraguso, from the Mexican side.