William Bell enrolled as a Gentleman Cadet in the Royal artillery in 1803. He served in the Napoleonic Wars in the West Indies, including the 1807 capture of St. Thomas and St. Croix, the siege of Fort Desaix, Martinique, the 1809 capture of Iles des Saintes, and the seizure of Guadeloupe in 1810. He was transferred to Europe in 1813, and served in the battles of Toulouse, Quatre Bras, and Waterloo. Bell returned to the West Indies in December 1829, remaining in Barbados until at least the following September. In 1831, he landed at Gibraltar.
From the guide to the William Bell journal, Bell, William, 1830-1833, (William L. Clements Library, University of Michigan)