The administration also contended with the Seminole Indians, who engaged the army in a prolonged conflict known as the Second Seminole War. Before he left office, Jackson put General Thomas Jesup in command of all military troops in Florida to force Seminole emigration to the West. Forts were established throughout the Indian territory, and mobile columns of soldiers scoured the countryside, and many Seminoles offered to surrender, including Chief Micanopy. The Seminoles slowly gathered for emigration near Tampa, but in June they fled the detention camps, driven off by disease and the presence of slave catchers hoping to capture Black Seminoles.