During the early part of the twentieth century all the Mediterranean powers were transforming or at least expanding their navies from mere coastal defense forces to modern war machines, thus adding to a highly unstable political situation. The naval challenge of the Triple Alliance to Britain and especially to France was a serious one. Indeed, this study demonstrates that the Mediterranean situation had great influence on the plans and estimates of the British Admiralty.

Paul G. Halpern has uncovered new material in London, Paris, Rome, and Vienna that helps to explain the plans and dispositions of Entente and Triple Alliance forces at the outbreak of the war.