Propeller of Handley-Page bomber, Western Front, during World War I. Mechanics checking one of the two propellers of this Handley-Page bomber. It is probable that this is a Handley-Page 0/400, an improved 1918 version of the 0/100 bomber which had been in use since 1916. It had four Rolls Royce engines and was the largest Allied aircraft used during the war. This is one of several photographs of this aircraft attributed to Tom Aitken, which have the word 'stopped' in blue pencil on the back. It may have been censored; this is particularly likely if it was the new 0/400 model. [Original reads: 'OFFICIAL PHOTOGRAPH TAKEN ON THE BRITISH WESTERN FRONT IN FRANCE. Handley-Page plane. One of her propellers.']