 Complete the following phrase:  Born on 17 March 1787 to Charles and Ann Fergusson, Fergusson was commissioned as ensign in 1801, in the 18th Royal Irish Regiment of Foot, before transferring to the 43rd Monmouthshire Regiment of Foot, training as light infantry under Sir John Moore at Shorncliffe. Promoted lieutet in 1804, and captain in 1806, he served in the Light Division throughout the Peninsular War. Fergusson was present at the battles of Roliça, Vimeiro, where he sustained wounds, and Corunna, where his regiment formed part of the reserve. Fergusson accompanied the 43rd on the 1809 Walcheren Expedition before returning to the Peninsula, experiencing action at River Côa, 