Perry plastic line infantry with Perry French hussar heads. It needs a bit of work to make the hussar heads fit because the line infantry has cast-on heads that you need to chop off. The hussar heads are rounded at the bottom so you then need to “dremel” out a seat for them in the infantry figure’s neck. All in out about 5 minutes work per figure which is not bad at all.
These are Voltigeurs and Fusiliers of the Young Guard. Some of the drummers and officers are Perry metal figures.