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The Filibuster War was a military conflict between filibustering multinational troops stationed in Nicaragua and a coalition of Central American armies.

William Walker's Conquest of Central America
Second Battle of Rivas 1856.jpg
Costa Rican troops attacking William Walker at Rivas in 1856.

Allied victory


Allied Central American Army (Ejército Aliado Centroamericano)

 United States (from 1857)[1]
Commanders and leaders
Flag of Nicaragua under William Walker (1856-1857).svg William Walker
Flag of Nicaragua under William Walker (1856-1857).svg Francisco Castellón
Flag of Nicaragua under William Walker (1856-1857).svg Charles F. Henningsen
Flag of Nicaragua under William Walker (1856-1857).svg Birkett D. Fry
Flag of Nicaragua under William Walker (1856-1857).svg Collier C. Hornsby
Flag of Nicaragua under William Walker (1856-1857).svg Domingo Goicouría
Flag of Nicaragua under William Walker (1856-1857).svg Byron Cole
Civil Flag of El Salvador.png Ramón Belloso
Flag of Costa Rica (1848-1906).svg José Joaquín Mora Porras
Civil Flag of El Salvador.png José María Cañas
Flag of Nicaragua (1839-1858).svg Tomás Martínez Guerrero
Flag of Nicaragua (1839-1858).svg Fernando Chamorro Alfaro
Flag of Nicaragua (1839-1858).svg Máximo Jerez Tellería
Flag of Guatemala (1851-1858).svg José Víctor Zavala
United States Charles H. Davis
2,518 mercenaries 2,500 men (Costa Rica)
4,000 men (Honduras)
Casualties and losses
1,000 killed (all causes)[3] 5,000 killed (all causes)
5,000 wounded[4]

Initial stagesEdit

In 1854, a civil war erupted in Nicaragua between the Legitimist party (also called the Conservative party), and the Democratic party (also called the Liberal party). The Democratic party sought military support from William Walker who, to circumvent American neutrality laws, obtained a contract from Democratic president President Castellón to bring as many as three hundred "colonists" to Nicaragua. Walker sailed from San Francisco on May 3, 1855, with approximately 60 men. Upon landing, the force was reinforced by 170 locals and about 100 Americans.[5][6]

Establishment of WalkerEdit

With Castellón's consent, Walker attacked the Legitimists in the town of Rivas, near the trans-isthmian route. He was driven off, but not without inflicting heavy casualties. On September 4, during the Battle of La Virgen, Walker defeated the Legitimist army. On October 13, he conquered the Legitimist capital of Granada and took effective control of the country. Initially, as commander of the army, Walker ruled Nicaragua through puppet President Patricio Rivas. U.S. President Franklin Pierce recognized Walker's regime as the legitimate government of Nicaragua on May 20, 1856.

Central American counterattackEdit

Walker had scared his neighbors with talk of further military conquests in Central America. Juan Rafael Mora, President of Costa Rica, rejected Walker's diplomatic overtures and instead declared war on his regime. Walker sent Colonel Schlessinger to invade Costa Rica in a preemptive action, but his forces were defeated at the Battle of Santa Rosa in March 1856. In April 1856, Costa Rican troops penetrated into Nicaraguan territory and inflicted a defeat on Walker's men at the Second Battle of Rivas, in which Juan Santamaría, later to be recognized as one of Costa Rica's national heroes by burning the place were the Filibuster were staying. Walker set himself up as President of Nicaragua, after conducting an uncontested election. He was inaugurated on July 12, 1856, and soon launched an Americanization program, reinstating slavery, declaring English an official language and reorganizing currency and fiscal policy to encourage immigration from the United States of America.

Meanwhile, government representatives from Honduras, El Salvador and Guatemala signed in the City of Guatemala a Treaty of Alliance on July 18, 1856, for "defense of its sovereignty and independence" also recognized Patricio Rivas as president of Nicaragua. Costa Rica could not attend at that time to the alliance because of the havoc that cholera disease had caused in their troops, but would resume actions later. Also, democratic and loyalist factions allied to Patricio Rivas, signed on 12 September, a "Providential Pact" declaring war against William Walker. For September 14, Septentrión Army (as the allied army was called) forces managed the first victory of the patriots Nicaraguans in the so-called Battle of San Jacinto.[7]

By the end of 1856, Walker ordered the destruction of Granada.

The Costa Rican government resumed action in late 1856, and developed plans to take over the San Juan River in order to cut Walker's supply of weapons and new recruits. Cornelius Vanderbilt sent one of his agents, Sylvanus Spencer, to collaborate with the Costa Rican army in order to recover the possession of the Transit Company he had lost to Walker. Spencer arrives to San Jose in November 1856 and it is assigned to a company under Major Maximo Blanco to take over the steamers of the Transit Company. By January 1857, the Costa Rican army was in control of the San Juan River and all the steamers of the Transit Company.

Meanwhile, Walker was expelled from Granada by the rest of the allied armies. Some reinforcements under the command of Lockridge and Titus tried to recover the control of the River from the Costa Ricans, unsuccessfully. By April 1857, Walker had taken Rivas again, and the allies had laid siege to the city, in what became known as the Third Battle of Rivas.

Walker's surrenderEdit

On May 1, 1857, Walker surrendered to Commander Charles Henry Davis of the United States Navy and was repatriated. Upon disembarking in New York City, he was greeted as a hero, but he alienated public opinion when he blamed his defeat on the U.S. Navy.


  • 20 March: Battle of Santa Rosa in Costa Rican territory.
  • 11 April: Second Battle of Rivas: Costa Rican troops repel the attack. The soldier, Juan Santamaría, stands out.
  • 26 April: Costa Rican troops leave Nicaragua, decimated by cholera.
  • 14 September: Victory of Nicaraguan patriots against the filibusters in the Battle of San Jacinto.
  • 22 September: William Walker decrees the legalization of slavery in the country.
  • 7 November: Costa Rican troops, under the command of José María Cañas, occupy San Juan del Sur.
  • 11 to 13 October: First Battle of Masaya: The Allied Central American Army repels the filibuster troops.
  • 11 November: Battle of the Transit: William Walker's troops defeat José María Cañas.
  • 15 to 17 November: Second Battle of Masaya, the Central American allies reject William Walker's troops.
  • 24 November to 14 December: destruction of Granada.
  • 16 December: Walker occupies the city of Rivas.
    • December: Costa Rican troops began a series of attacks that take river steamers in San Juan del Norte and the river San Juan, as well as the fortresses of El Castillo and San Carlos.
  • 3 January: Costa Rican troops take the steamer "San Carlos", isolating William Walker's government from the Atlantic Ocean.
  • 28 January: Allied troops occupy the lake port of San Jorge.
  • 5 March: Nicaraguan and Central American troops under the command of Fernando Chamorro Alfaro and Florencio Xatruch respectively, defeat the filibusters in the Battle of El Jocote.
  • 23 March: Third Battle of Rivas, Central American allies attack the town without results.
  • 11 April: Fourth Battle of Rivas, Central American allies, again, attack the town without results.
  • 17 April: Central American Allied troops occupy San Juan del Sur.
  • 1 May: William Walker surrenders to U.S. Captain Charles H. Davis.
  • 5 May: William Walker abandons Nicaragua in the sloop St. Mary's.

See alsoEdit


  1. ^ "La Guerra Nacional" [National War] (in Spanish). Nicaragua Ministry of Foreign Affairs. Archived from the original on 24 July 2015. Retrieved 25 September 2016.
  2. ^ Don Fuchik (2007). "The Saga of William Walker". Retrieved 11 April 2015.
  3. ^ "Statistics of Wars, Oppressions and Atrocities of the Nineteenth Century" (collection of many sources)
  4. ^ 4,000 to 5,000 dead per (Scroggs, Filibusters and financiers: the story of William Walker and his associates (1916) p.305), 2,100 dead out of 2,500 for Costa Rica alone per (Scheina, Latin America's Wars), 5,800 killed and wounded in battle + 5,000 died of disease per (Clodfelter).
  5. ^ Museo Juan Santamaría: Cronología histórica relacionada con la Guerra Nacional Centroamericana contra los Filibusteros
  6. ^ Museo Juan Santamaría: Cronología histórica relacionada con la Guerra Nacional Centroamericana contra los Filibusteros
  7. ^ "La Guerra Nacional" [National War] (in Spanish). Nicaragua Ministry of Foreign Affairs. Archived from the original on 24 July 2015. Retrieved 25 September 2016.

External linksEdit