During this period, royalist forces made advances into New Granada, which they controlled from 1815 to 1819, and into Chile, which they controlled from 1814 to 1817. Except for royalist areas in the northeast and south, the provinces of New Granada had maintained independence from Spain since 1810, unlike neighboring Venezuela, where royalists and pro-independence forces had exchanged control of the region several times. To pacify Venezuela and to retake New Granada, Spain organized in 1815 the largest armed force it ever sent to the New World, consisting of 10,500 troops and nearly sixty ships. (See, Spanish reconquest of New Granada.) Although this force was crucial in retaking a solidly pro-independence region like New Granada, its soldiers were eventually spread out throughout Venezuela, New Granada, Quito, and Peru and were lost to tropical diseases, diluting their impact on the war. More importantly, the majority of the royalist forces were composed, not of soldiers sent from the peninsula, but of Spanish Americans.