I had a few options with these figures including stripping and painting as either Austrians or again Brunswickers.
Before doing this I thought I would try a quick paint restoration on a single figure to see if I could produce a reasonable finish.
Firstly I get to remove them from their metal bases. I removed the polyfila first and then holding the metal base with a small pair of pliers I gently heated the base on a gas ring. The heat melted the glue, which looked like araldite, and allowed the figure to be gently prised of the base. We careful the figure gets hot and you need to make sure you don't over heat as there is a risk the figure could melt.
The photos below show the before and after paint restoration and a coat of gloss. The result looks good enough so I will do a paint restoration on the unit and add the 1st Brunswick Line to my allied order of battle.
The previous owner had converted a couple of standard bearers which I will use but there were no other commands figures. It just so happens that in my spares box I had an old Kennington Brunswick command pack and I will use these.
They are a close enough and once painted black will fit in nicely.