I know that this forum is really designed to allow folks to review and recommend a book that they have read, but I need to come at it from the other end...

If you could purchase only one book and your goal was to better understand the armed conflicts on the island of Britain between 1640 and 1662 (and the distinctions between the Royalist/Parlimentarian, Presbyterian/Cromwellian, Scottish/English positions), what would it be?

Thanks,

David