Peruvian Civil War of 1856–1858

Peruvian Civil War (1856-1858); Arequipa Revolution (1856–1858)
	Part of Peruvian civil wars and Guano Era
	; Capture of Arequipa
Date	1856–1858
Location	Peruvian coast
Result	Conservative Army victory; Arequipa is downgraded to the category of province for his uprising in favor of Ramón Castilla's opponents; The liberal Constitution of 1856 is repealed and replaced by the moderate Constitution of 1860; The First Ecuadorian-Peruvian War begins;
Belligerents
Conservatives; Arequipan loyalists	Liberals; Arequipan rebels
Commanders and leaders
Ramón Castilla; Miguel de San Román	Manuel de Vivanco ; José Rufino Echenique ; Miguel Grau (Navy)
Strength
Peruvian Army; Arequipan Loyal Army ; 10,000-11,000 troops; 3 pieces of artillery; Peruvian Navy	Vivanquista Army; Arequipan Rebel Army; 8,000-10,000 troops; Vivanquista Navy; 3 warships rebels
Casualties and losses
5,000–6,000 killed and wounded	7,000 killed and wounded; 1,000–3,000 captured; 3 warships captured
	3,000 civilians killed in the civil war

The Peruvian Civil War of 1856–1858, also known as the Arequipa Revolution of 1856, was one of the largest and most violent in Peru. It was the third internal conflict in 19th century Peru (after the Peruvian Civil War of 1834 and Peruvian Civil War of 1843–1844). It was fought between the Conservatives (supporters of Ramón Castilla) and the Liberals (who opposed Castilla). It followed the Peruvian Liberal Revolution of 1854. 3,000 people were killed on both sides.