Lone Sentry: Japanese A/A Guns (WWII U.S. Intelligence Bulletin, April 1943)
QF 2-pounder naval gun - Wikipedia
QF 2-pounder naval gun | Military Wiki | Fandom
United Kingdom / Britain 2-pdr [4 cm/39 (1.575")] QF Mark VIII - NavWeaps
RG Poulussen on Twitter: "#OTD in 1942. "Pom-pom" (love the name), the QF (quick firing) 2-pounder 40mm anti-aircraft gun of the Royal Navy. #WW2 #HISTORY… https://t.co/WxDjtRLbY0"