04/30/2019. Remarks by Johan Visschedijk: "These aircraft of No. 40 Squadron, based at Wyton, Huntingdonshire, England, are fitted with a dorsal turret with two Browning machine guns and two rearward-firing Browning machine guns under the nose. The aircraft in front is fitted with a large rear-view mirror above the windshield."

(Note: The original print from which Aeroplane Photo Supply copied this image, shows six aircraft.)