Von Stedingk arrived in America in 1778 with the first French force under the command of Admiral D'Estaing. After the failure to capture Newport in August, the fleet moved off to the Caribbean and in December the French fleet under D'Estaing began a series of attacks on British possessions. The French seized first Saint Vincent in June 1779 and then Grenada, which was captured on 3 July. Von Stedingk appears to have been present either at the seizure of Grenada or the fleet action between D'Estaing and Admiral John Byron that followed. At the seige of Savannah in October he commanded the left column of the attacking force. His column lost some cohesion during the advance, which was undertaken under severe fire, but the French managed to capture a section of the British earthworks. Apparently von Stedingk managed to plant an American flag in the British trenches, but he was then wounded and a counter-attack by grenadiers and Royal Marines forced the French to retreat. After the unsuccessful siege on Savannah, D'Estaing and his force returned to France.
George Washingting recognised von Stedingk's contribution to the war effort by making him a founding member of the Society of the Cincinnati. This society, the brainchild of Major General Henry Knox, was founded in 1783 to maintain links and friendship between officers of the Continental Army. Other original members also included Louis de Nouailles. Unfortunately, it seems that the King of Sweden, Gustav III, told von Stedingk that he could not wear the insignia of the Society as the award cam from people who had revolted against their king.
Von Stedingk remained in the army and participated in the Russo-Swedish War of 1788-90, a rather inconclusive affair which Gustav III began to distract attention from domestic issues (he was assassinated in 1792), and was promoted to major general. He then served as Sweden's ambassador to Russia before taking to the battlefield again in the Russo-Swedish War of 1808-1809. That war has some important effects on Sweden: Finland was lost and fell within the Russian Empire, and King Gutav IV was deposed and the House of Bernadotte became the new ruling family of Sweden. Von Stedingk was the commander of the Swedish army at Leipzig in 1813 (which only participated in the action rather late in the day), following which he was promoted to field marshal. He died in 1837, aged 90.
The uniform took a bit of research. From about 1750 onwards the regiment seems to have had dark blue coats with buff or yellow-brown facings, so resembling traditional Swedish infantry uniforms. I found conflicting information about the colour of the blue - whether dark blue or a lighter colour. In the end I went with a more medium/light blue, in part because the uniform would then resemble that of the Royal Deux-Ponts regiment and I could therefore use this figure as the commander of that regiment as well. The Perry sculpt looks a bit older and more portly than you'd expect of a 35 year old. I gave von Stedingk a powdered wig because that's what he wears in the various portraits of him that I've found.
1 figure. Painted August 2015.