DJ
Mate for solo gaming try General De Brigade .
They are a more Historical set than most , and most importantly they have .. these crazy things called orders, AND fog of war ...

This makes them perfectly suited for Solo gaming .
You can perhaps even use General De Armee ( add on GDE Brigade command orders )
For a smaller level a scaled up Sharpes Practise will look awesome , again make up a card deck , 10 cards say , and pick up a card at the start of the battle that gives the relevent orders , ( skirmish / assult / scout .. etc ) that the Non Playing side Must Follow .. and you are away .
The Sharpes Practise line units can still be used based up in multifigure bases , just paint some separate skirmishers...
As an added advantage small scale games let the terrain come back in to better scale , and often a smaller game looks miles better than a big game .
Cheers