Commander Tucker resigned from the U.S. Navy when Virginia seceded from the Union on April 18, 1861, becoming a Commander in the Virginia Navy and, in June, the Confederate States Navy. In 1861–62, he was the commanding officer of CSS Patrick Henry, armed with 10 guns and manned by 150 officers and sailors, participating with her in several combat actions, including supporting the ironclad in the Battle of Hampton Roads. In April 1862 he took command of the James River Squadron, which included the Patrick Henry and Virginia. During the Federal Navy's attack on the Drewry's Bluff fortifications in May 1862, he commanded one of the defending batteries in the Battle of Drewry's Bluff. In July 1862, Tucker was ordered to Charleston, South Carolina, where he took command of the ironclad CSS Chicora. The following January 31, he led his ship in a successful attack on Union warships off that port engaging several Federal ships, including the USS Keystone State, in a gun battle. He became commander of the Confederate warships at Charleston in March 1863, remaining in that post until the city fell in February 1865. During that time, he was promoted to Captain and aggressively pursued spar-torpedo warfare against U.S. warships. He was ordered to scuttle his vessels and retreat to Wilmington, North Carolina after General William T. Sherman with his army came to Charleston. Tucker formed a marine detachment from the crews of ships which became known as Tucker's Marine Brigade. During the U.S. Civil War's last weeks he served with his men in the defenses of Richmond, Virginia, the Confederate capital, manning Fort Darling on Drewry's Bluff on the James River while the Confederate States Army was facing its final destiny at Appomattox, Virginia. He surrendered in the field on April 6, 1865 at the Battle of Sailor's Creek, southwest of Petersburg, and remained a prisoner of war until July 24. After his release, he returned to the South to work as an agent of the Southern Express Company of Raleigh, North Carolina.
Peruvian Navy
In 1866, the Peruvian Minister to the United States contacted Tucker to arrange an interview in Washington, D.C. At that time, Peru and Chile were in the Chincha Islands War with Spain, and the Peruvian President, General Mariano Ignacio Prado, invited Tucker to join their Navy as a rear admiral, bringing with him two staff officers of his choice. Prado planned for Tucker to lead the allied fleet of Peru and Chile against the Spanish. Tucker accepted the position and went to Peru with Captain David Porter McCorkle and Commander Walter Raleigh Butt. After arriving at Valparaiso, Chile, Tucker raised his flag on board the Peruvian armored corvette Independencia. Although some Peruvian naval officers objected to a foreigner in command of their fleet, Tucker did his best to raise the battle preparedness of the combined navies of Peru and Chile. Several Peruvian naval officers, including Miguel Grau Seminario, later known as "the Knight of the Seas" at the War of Guano and Salitre, resigned their commissions due to Tucker's appointment. After the Spanish fleet left South America's Pacific coast, Tucker stepped down as fleet commander but remained a rear admiral because of the support of President Prado.
Peruvian Hydrographic Commission of the Amazon
Tucker resigned from the Peruvian Navy in 1871. He was then appointed president of the Hydrographic Commission of Peru on the Amazon River, which included a group of American and Peruvian naval officers and engineers, James Henry Rochelle, David Porter McCorkle, Walter Raleigh Butt, and Thomas Wing Sparrow, among others. The expedition surveyed the upper Amazon River and its tributaries and discovered two new rivers, the Trinidad and the Herrera-yacu. Tucker traveled to New York upon completion of the expedition to have maps and atlases made and the Commission's findings published. John Randolph Tucker died in his home at Petersburg, Virginia, on June 12, 1883. His remains were interred in Norfolk, Virginia where his wife was already laid to rest after she died in 1858 at age thirty-nine. His collected papers are preserved in the library of Old Dominion University.
Family
On June 7, 1838, Tucker married Virginia Webb, daughter of U.S. Navy captain Thomas Tarleton Webb, and they had nine children.
