WORLD WAR II: A good, attractive First Day of Issue cover honouring Winston Churchill, multiple signed by four British military leaders of World War II comprising B. L. Montgomery (1887-1976) British Field Marshal, Humfrey Gale (1890-1971) British Lieutenant General, Charles Portal (1893-1971) British Marshal of the Royal Air Force, and Arthur T. Harris (1892-1984) British Marshal of the Royal Air Force. All have signed in blue or black fountain pen inks to clear areas of the cover, each adding their ranks alongside their signatures. A couple of light corner creases, not affecting the signatures, otherwise VG