Portrait of Sir Augustus Simon Frazer, full-length, in military dress

A great favourite of Wellington, Sir Augustus Simon Frazer (1776-1835) served with distinction in the Peninsular War. In 1813, he was appointed to command the Royal Horse Artillery, was promoted to lieutenant-colonel and was granted a gold cross and one clasp for his part in the battles of Vittoria, San Sebastian, Nivelle, Nive and Toulouse. Frazer also commanded the Royal Horse Artillery at the Battle of Waterloo and, according to a contemporary, 'prevailed on the Duke of Wellington, who was at first not favourable to the exchange, to permit him to substitute 9-pounders for 6-pounders in the troops of Horse Artillery. To this exchange, may justly be ascribed much of the success of that memorable day.'

Thomas Heaphy accompanied Wellington's army in the Peninsular War between 1813 and 1814. He painted many individual portraits before completing his greatest work Wellington in Consultation with his Officers (now in the Victoria and Albert Museum) in 1816.