Born from wartime urgency, the 20 mm Polsten naval gun entered service in March 1944 as a simplified but deadly alternative to the Oerlikon. Built for only about £60–£70 per unit, it delivered rapid 450 rpm firepower that reshaped Allied air defense at sea. With each 20 mm round costing only a fraction of heavier naval shells, the Polsten proved that cheaper weapons could still dominate the sky when speed and reliability mattered most. 🔥 🇺🇸 #NavalHistory #WWIINaval #Polsten20mm #AntiAircraftG

A Finnish soldier demonstrates the 20 mm Lahti L-39 anti tank rifle, nicknamed “Norsupyssy” or “Elephant Gun,” to Lt. Col. Laaksonen, April 1942. Capable of piercing early Soviet armor but weighing over 100 pounds, it was among the most powerful anti tank rifles of World War II. #ww2 #military #army | The War Rooms