Biggest and fastest plane built by the British aeronautical firm of Handley-Page, Ltd., is the “Halifax” bomber, which has been playing an important part in the Royal Air Force long-range attacks on Germany, Italy and occupied France. Its bomb compartment takes up most of the space in the fuselage below the wings, and through vast doors in the floor the bomb aimer releases the heaviest type of bombs in production. The “Halifax” is the first British four-engine plane in some years to be equipped with liquid-cooled motors. These are Rolls-Royce “Merlins.” Heavily armed for its own defense, the plane has a four-gun “Boulton-Paul” turret mounted behind its twin tail fins and rudders. Seven men form the crew.