Very well done models. The Royal Horse Artillery had two mounted rocket troops.
Captain Whinyates commanded one in the campaign in Belgium in 1815 and Wellington ordered that he up-gun to 6-pounders, though he also kept his rockets.
Wellington was informed, politely I suspect, that would 'break the troops commander's heart. Wellington replied in his normal tone 'Damn his heart, let my order be obeyed.'
It was, but Whinyates still employed and fired his rockets at Quatre Bras…
Wellington requested them in the Peninsula, but wanted the troops horses for his artillery and didn't care for rockets. He had been at Copenhagen in 1807 and witnessed their performance there.