João Frederico Caldwell

**Marechal**
João Frederico Caldwell
Marechal João Frederico Caldwell
	Caldwell in 1870
Minister of War
	In office; September 29, 1870 – November 9, 1870
Monarch	Pedro II
Prime Minister	Marquis of São Vicente
Preceded by	Marquis of Muritiba
Succeeded by	Raimundo de Araújo Lima
Personal details
Born	1801; Santarém, Santarém District, Portugal
Died	February 26, 1873 (aged 71–72); Município Neutro, Brazil
Military service
Allegiance	Empire of Brazil
Branch	Imperial Brazilian Army
Years of service	1817–1873
Rank	Marshal
Battles/wars	Pernambuco revolt; Confederation of the Equator; Cisplatine War; War of Cabanos; Ragamuffin War Battle of Seival (POW); ; Platine War; Paraguayan War Corrientes campaign Invasion of Rio Grande do Sul; Siege of Uruguaiana; ; ;

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João Frederico Caldwell (c. 1801 – 26 February 1873) was a Portuguese-born Brazilian marshal and politician who was a military figure during the 19th century. He was known for his extensive career since the Pernambuco revolt and was one of the main leaders of the Paraguayan Invasion of Rio Grande do Sul during the Corrientes campaign of the Paraguayan War.