Thanks for that Bill. I have now found the Fortescue book online. I see what you mean about the unrest. Most of the stuff about volunteers is still more about rank and file or whole units, not individual officers. There were definitely no militia rank and file joining the 5th/60th.
The poor guy who joined the 5th/60th died of wounds in the Pyrenees so it would be nice to get to the bottom of his story.
Cheers
Rob