Naval power played a vital role in the Peloponnesian War. The conflict pitted Athens against a powerful coalition including the preeminent land power of the day, Sparta. Only Athens' superior fleet, her 'wooden walls', by protecting her vital supply routes allowed her to survive. It also allowed the strategic freedom of movement to strike back where she chose, most famously at Sphacteria, where a Spartan force was cut off and forced to surrender. Athens' initial tactical superiority was demonstrated at the Battle of Chalcis, where her ships literally ran rings round the opposition but this...