
Isidro de Alaix Fábregas, Count of Vergara and Viscount of Villarrobledo, was a Spanish general of the First Carlist War, supporting the cause of the Liberals, who backed Isabella II of Spain and her regent mother Maria Christina. Born at Ceuta, Alaix fought during the Spanish War of Independence and also participated in the campaigns in South America against the independence movements there.
Wenceslao Ayguals de Izco was a Spanish writer and editor.

Joseph Bernelle was a French Army officer who commanded the French Foreign Legion during the Carlist War.

Juan Palarea y Blanes, also known by his alias el Médico was a Spanish guerrillero commander during the Peninsular War, Medical Practitioner, and Spanish Politician.

Ramon Cabrera y Griñó, 1st Count of Morella, 1st Marquis of Ter was a Carlist general of Catalonia. He renounced the combined title of 1st Duke of Maestrazgo with its annual stipend in favour of the less fortunate and kept both the Borbón-recognised Carlist count and the subsequent Borbón marquis nobility titles instead.

Joseph Conrad was a French Army officer who served in the Napoleonic Wars and in the French Foreign Legion serving in Algeria and Spain during the First Carlist War.

Baldomero Fernández-Espartero y Álvarez de Toro was a Spanish marshal and statesman. He served as the Regent of the Realm as well as three times as Prime Minister. Throughout his life, he was endowed with a long list of titles such as Prince of Vergara, Duke of la Victoria, Count of Luchana, Viscount of Banderas and was also styled as "the Peacemaker".

Francisco Espoz Ilundáin, being better known as Francisco Espoz y Mina, was a Spanish guerrilla leader and general.

Luis Fernández de Córdova was a Spanish military general, diplomat and first Marquis of Mendigorria.

Francisco Javier Girón, 2nd Duke of Ahumada was a Spanish Army officer known for being the founder and first Director-General of the Civil Guard.

Friedrich, Prince of Schwarzenberg (1800–1870) had an adventurous career as a soldier, and described his wanderings and campaigns in several interesting works, of which the best known is his Wanderungen eines Lanzknechtes (1844–1845).

August Karl Friedrich Christian von Goeben, was a Prussian infantry general, who won the Iron Cross for his service in the Franco-Prussian War of 1870–71.

Miguel Gómez Damas was a Spanish Carlist general of the First Carlist War.

Vicente González Moreno was a Spanish general who supported the Carlists during the First Carlist War. He was appointed commander of Carlist forces after the death of Zumalacárregui.

José Gutiérrez de la Concha e Irigoyen, 1st Marquess of Havana, 1st Viscount of Cuba, Grandee of Spain was a Spanish noble, general, and politician who served three times as Captain General of Cuba and once as the Prime Minister of Spain.

Manuel Gutiérrez de la Concha e Irigoyen, Marquis of the Duero, was a 19th-century Spanish military man and Liberal-Moderate politician, noted for opposing the Carlist rebellions. He was born in Córdoba del Tucumán, Viceroyalty of the Río de la Plata, on 3 April 1808, and died at Monte Muro, Navarre, on 27 June 1874.

Rear Admiral Lord John Hay, was a British naval officer and Whig politician.

Charles Frederick Henningsen was a Belgian-American writer, mercenary, filibuster, and munitions expert. He participated in civil wars and independence movements in Spain, Circassia, Hungary, Nicaragua, and the United States.

Don Diego de León y Navarrete was a Spanish military figure. As a young man, he entered the Spanish army as a cavalryman and achieved the rank of captain at the age of 17.

Felix (von) Lichnowsky, fully Felix Maria Vincenz Andreas Fürst von Lichnowsky, Graf von Werdenberg was a son of the historian Eduard Lichnowsky who had written a history of the Habsburg family.

Rafael Maroto Yserns was a Spanish general, known both for his involvement on the Spanish side in the wars of independence in South America and on the Carlist side in the First Carlist War.

Torcuato Mendiri y Colera (1813–1884) was a Spanish nobleman. He fought on the side of the Carlists in the First (1833–1839) and Third (1872–1876) Carlist Wars.

Leopoldo O'Donnell y Jorris, 1st Duke of Tetuán, GE, was a Spanish general and statesman who was Prime Minister of Spain on several occasions.

Marcelino de Oraá Lecumberri (1788–1851) was a Spanish military man and administrator. Born in Beriáin in Navarre, he distinguished himself as a cadet during the War of Spanish Independence. He was married to Josefa de Erice, later Condesa de Chiva y Vizcondesa de Oráa.

Manuel Pavía y Lacy, 1st Marquis de Novaliches, was a Spanish marshal.

Juan Prim y Prats, 1st Count of Reus, 1st Marquis of los Castillejos, 1st Viscount of Bruch was a Spanish general and statesman who was briefly Prime Minister of Spain until his assassination.

Vicente Genaro de Quesada was a Spanish military figure. He participated in the Battle of Burgos (1808) during the Peninsular War, leading the Royal Guard and Walloon Guard. Forming a rearguard for the shattered Spanish lines, these troops absorbed repeated charges by General Lasalle's French cavalry without yielding any ground.

Baron Wilhelm von Rahden was a German officer and writer.

Count Raoul du Bisson was a French aristocrat, adventurer and agent provocateur. He belonged to a Norman family ennobled by Louis XVIII and was a relative of Henri Conneau, a personal friend and physician of Napoleon III.

José Felipe Rivero y Lemoine was a Spanish politician, governor, minister and military leader who participated in the Battle of Ayacucho and held important public positions in Spain. He was the last Viceroy of Navarra and the penultimate Governor of the Captaincy General of Santo Domingo.

Don José Ramón Rodil y Campillo, 1st Marquess of Rodil and 3rd Viscount of Trobo was a ruthless Spanish Liberal general and statesman, born in Santa María del Trovo, Galicia region. Originally a law student at the University of Santiago de Compostela, he enlisted in the Spanish army and went to Peru in 1817 as one of the commissioned officers in the fight against the pro-independence nationalist forces. He also served as Prime Minister of Spain from 17 June 1842 to 9 May 1843.

Antonio Ros de Olano y Perpiñá was a Venezuelan-born Spanish writer, politician and military officer who served in the First Carlist War and the Spanish–Moroccan War.

Dom Sebastian Gabriel of Bourbon and Braganza, Infante of Portugal and Spain, was an Iberian prince of the 19th century, progenitor of the Spanish ducal lines of Hernani, Ansola, Dúrcal and Marchena, and Carlist army commander in the First Carlist War.

Francisco Serrano Domínguez Cuenca y Pérez de Vargas, 1st Duke of la Torre, Grandee of Spain, Count of San Antonio was a Spanish marshal and statesman. He was Prime Minister of Spain in 1868–69 and regent in 1869–70.

Francisco Xavier da Silva Pereira, 1st Count of Antas was a Portuguese nobleman and a leading soldier of the period of the Liberal Wars.

Rafael Tristany (1814–1899) was a Spanish Catalan carlist general of the Carlist Wars. He was born in the Province of Lleida in Catalonia. He fought in all three of the Carlist Wars on the side of the Carlists. After the defeat of Carlos, Duke of Madrid in 1876, he went into exile in France, where he died.

Jerónimo Valdés (1784–1855) was a Spanish military figure and administrator. Born in Villarín, in Asturias, he participated in the battle of Ayacucho (1824), which was a defeat for the Spanish. He served as Viceroy of Navarre from 1833 to 1834 and also served as Minister of War. He fought on the Liberal (Isabeline) side in the First Carlist War. Valdés lost the Battle of Artaza.

Juan Van Halen y Sarti was a Spanish military officer. After fighting for the losing side in the Peninsular War, he was forced to flee to Spain. Van Halen became a military adventurer throughout Europe and went on an 18-month tenure as a colonel in the Russian Caucasus Dragoon Regiment until his removal by Tsar Alexander I of Russia.

General William Wylde CB was Master Gunner, St James's Park, the most senior Ceremonial Post in the Royal Artillery after the Sovereign.

Tomás de Zumalacárregui e Imaz, known among his troops as "Uncle Tomás", was a Spanish Basque officer who lead the Carlist faction as Captain general of the Army during the First Carlist War. He was occasionally nicknamed the "Wolf of the Amezcoas", making reference to his famous military victory in the region of Navarre.

Martín Zurbano Baras was a Spanish military figure. A guerrilla leader, he is considered a "martyr to Spanish liberty".