Morier was a Swiss military and sporting painter who started working for William Augustus, Duke of Cumberland (1721-65) in 1747, when he painted a series of pictures of troops under his command. From 1752 until 1764 he was employed as ‘limner’ (painter) to the Duke on an annual salary of £100; his name also appears regularly in Royal accounts from 1764 to 1767. Full-length, mounted on a rearing bay horse, facing in profile slightly to the left, head turned three-quarters to the left; he is wearing a black coat, cream breeches, black boots and tasseled sash around waist; cavalry battle takes place behind.