I see that Project Gutenberg has Mahan's 'Sea Power" on-line.
Thank God that Al Gore invented the internet!
thanks for the clarification - I saw there was a bit of a dynasty but hadn't followed them all the way down!
In that case, I would suspect that A.T. Mahan demonstrates the rule of the open flank (i.e., there is always an open flank, if you can reach and attack it)?