Active warfare throughout history has mainly been a matter for men, but women have also played a role, often a leading one. While women rulers conducting warfare was common, women who participated in active warfare was rare. The following list of women in war and their exploits from about 1800 up to about 1899.
1808: Agustina de Aragón defends Spain during the Spanish War of Independence. During the bloody sieges of Saragossa, French General Jean-Antonie Verdier started the attack with a twenty-seven-hour bombardment of Zaragoza. At the Portillo Gate, most of the Spanish defenders had been killed or wounded, and on 2 July 1808 a French column launched an assault on the unmanned Portillo Gate battery. Observing the danger, twenty-two-year-old Agustina rushed forward to a twenty-four-pound cannon, retrieved the still-burning wick from the hands of a fallen gunner, and fired the cannon loaded with grapeshot at the advancing French column that decimated it and gave time to arrive Spanish reinforcements from a near battery to reject the attack. Agustina herself explained the facts in a memorial signed in Sevilla city in date 12 August 1810.
1808-1809: Elisa Bernerström enlists in the Swedish army dressed as a man because "She had decided to live and to die with her husband", the soldier Bernhard Servenus; she participates in the war between Sweden and Russia about Finland, and during one battle, she collected the ammunition of the Russians and gave them to her comrades. She is later discovered, fired but decorated with a medal for bravery in battle.
1812: Marie Manuel and her husband Blaise Peuxe serve together as gunners in a French artillery unit during the Peninsular War. They are captured together when the British Army enters Madrid in August 1812, and become prisoners of war in Scotland, where Marie is officially acknowledged as an enemy combatant rather than simply a camp follower, wearing uniform and avoiding the forcible repatriation imposed on other prisoners' attendant families. The memoirs of another prisoner hint that she was a Spanish girl who had met her husband when she saved him from guerrillas in 1811, but this source may combine the story of the husband-and-wife gunners with elements of the biographies of other female prisoners-of-war in the same group.
1812-1813: Dutch woman Francina Gunningh Sloet serves in the Prussian army dressed as a man.
1815: William Brown (birth name unknown), a Royal Navy sailor, is discovered to be a woman. She is the first black woman to serve in the Royal Navy.
1815: Several women are found dead in British uniforms after the Battle of Waterloo, among them Mary Dixon, who dies in service after having served sixteen years in the British army dressed as a man 
1817: La Pola is executed by the Spanish after having served as a spy during the Colombian war of Independence.
1822: Angelique Brulon, a female soldier who had in defence of Corsica from 1792–1799, is promoted to lieutenant. She had originally fought while disguised as a man, but eventually fought openly as a woman. She retires the same year.
1831: Countess Emilia Plater creates her own group to fight in the Polish November Uprising. She becomes commanding officer of a company of infantry in the rank of captain. She dies from illness contracted during a forced march in December 1832. Several other women served openly as soldiers during this Polish rebellion against Russia, although not many are named; Soltyk reported that a beautiful girl of eighteen fought at the Russian crossfier at the Vola trenches in Warsaw the 4th September 1831, and he added that "there where not one troop of our army, where not one or more of these heroines fought."
1838-1839: Johanna Martens serve in the Dutch army dressed as a man to be near to her lover, a soldier.
1856: Pancha Carrasco takes part in the Second Battle of Rivas in Costa Rica. While serving the militia as a cook and impromptu medic, filled her apron pockets with bullets, grabbed a discarded rifle and shamed some of the retreating Costa Ricans forestalling what might have become a rout.
1885: Women started serving with the Canadian military in 1885, as nurses.
1883 : Marieta de Veintemilla, the niece and first lady of president Ignacio de Veintemilla, takes control of the capital, the government and its military forces in the name of her absent uncle and commands the defense of the capital of Quito when it is attacked by the rebels.
^Lily Sosa de Newton (1980). "Diccionario Biográfico de Mujeres Argentinas" ("Biographic Dictionnary of Argentine Women"). Plus Ultra: Buenos Aires. (Spanish)
^Durova, Nadezhda, The Cavalry Maiden: Journals of a Russian Officer in the Napoleonic Wars trans. Mary Fleming Zirin. Indiana University Press, 1989. ISBN 0-253-20549-2
^Rudorff, Raymond (1974) War to the death: the sieges of Saragossa, 1808-1809, p. 101. Hamilton. At Google Books. Retrieved 25 August 2013.
^Queralt del Hierro, María Pilar, Agustina de Aragón, la mujer y el mito, Madrid, La Esfera de los Libros, 2008.
^Cecilia af Klercker (översättning och redigering) (1942). Hedvig Elisabeth Charlottas dagbok VIII. P.A. Norstedt & Söners förlag.
^Encyklopedia Wojen Napoleońskich - R. Bielecki ("Encyclopedia of the Napoleonic Wars" in Polish)
^Pallis, Michael “Slaves of Slaves: The Challenge of Latin American Women” (London: Zed Press, 1980) pg. 24
^Hedvig Elisabet Charlotta; Klercker Cecilia af (1942). Hedvig Elisabeth Charlottas dagbok. 9, 1812-1817. Stockholm: Norstedt. p. 689
^(Spanish) "Bocanegra de Lazo de la Vega, Gertrudis," Enciclopedia de México, v. 2. Mexico City, 1988.
^Ian MacDougall, All Men are Brethren: French, Scandinavian, Italian, German, Dutch, Belgian, Spanish, Polish, West Indian, American, and Other Prisoners of War in Scotland, 1803-1814 (John Donald, Edinburgh 2008), pp. 162-64, 227, 723-24
^Boles, Janet K. and Hoeveler, Diane Long. Historical Dictionary of Feminism (Historical Dictionaries of Religions, Philosophies and Movements) (28 May 2004 ed.). The Scarecrow Press, Inc.; 2nd edition. p. 488. ISBN0-8108-4946-1.