Apologies for the formatting being a bit out!
General – Usually the Warden of the West – Since time immemorial the head of house Lannister
Lord – A Great Lord of the West such as a Marbrand, Clegane or a close Lannister relation
Captain – Commander of the household guard or son of a Lord, or very minor Lord.
Beyond the Wall and over the Sea in Part 2 plus rule amendments and a load of miscellaneous stuff