DG - yes, I'll have a look at Fortescue, and at the books by Cookson and Linch too, although the focus of all of them is on the government's response to the need to recruit more soldiers for home defence and the regular army, while I am a little more curious about what serving in the militia was like for the officers, what sort of men became officers, and that sort of thing. But it just needs a bit of digging, and that needs a bit of time...

Rory