Dear Mr Cornwell,

I’m terribly sorry if this question has already been answered (I’m sure it probably has, several times!), but I was wondering if you could point me in the direction of some good books on early historic warfare? In particular, I’m looking to learn about the experience of war between Celtic Britons and Anglo-Saxons in Northern Britain in the 7th century AD. Equipment seems easy enough to find info about: less easy is trying to understand the tactical, strategic, and operational considerations that would have driven decision-making on the battlefield. I hope this isn’t too specific! I am a huge devotee of your work.

Many thanks,

David Colledge