The military and naval expert of the New York Times writes a handbook for defense. His is an elastic approach, taking into consideration all the conjectural possibilities, the likelihoods and unlikelihoods that determine the subject of defense, defense from Hitler, from Japan, etc. But his main thesis is that no matter what defense moves we make, they must be concerted under a unified command. The fallibilities of the country's preparation to date is due to hit or miss, pull devil, pull baker policy. He takes the viewpoint that invasion is impossible, but analyzes the force of our navy, army and air force, discussing the expansion programs, and emphasizing the need for quality rather than bulk. He urges a planning agency for hemisphere defense, with a sound factual approach in great detail.