The early losses likely had few modifications; restricted to replacing the after set of torpedo tubes with a QF 12 pounder anti-aircraft (A/A) gun - if at all.
The 12-pounder gun that was the Battle class trawlers' main armament was considered to be the smallest gun that stood a chance of putting a surfaced U-boat out of action, and they also carried a small number of depth charges.
some machine guns, 1 x 75 mm (12-pounder gun) she (Ondina), had an ammunition supply of only 40 shells
French ships used standardized guns of 36-pound, 24-pound and 12-pound calibres, augmented by carronades and smaller pieces.
A 12-pounder gun was to be fitted in a special position centrally below the airship for use against U-boats.
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The first tank against tank combat in history took place on 24 April 1918 when three A7Vs (including chassis number 561, known as "Nixe") taking part in an attack with infantry incidentally met three Mark IVs (two female machine gun-armed tanks and one male with two 6-pounder guns) near Villers-Bretonneux.
Many sources claim that the main armament, a nose-mounted cannon, was a standard 57-millimetre 6-pounder gun.
During the Anglo-Spanish War of 1762–3, five 9-pdrs and one 6-pdr were recorded as being mounted on the Lines.
He commanded the Niger river flotilla which drove the Germans out of Dehane in December 1914, then led a party from the coast which transported a naval 12-pounder gun taken out of HMS Challenger on an epic journey of 640 miles along the Niger and Benue rivers, then sixty miles overland, to assist Brigadier-General Cunliffe in the taking of Garoua from a German garrison.
The line was held by the Greek-Cypriot 399th infantry battalion reinforced with two 3M6 Shmel missile launchers, 4 106mm recoilless rifles and 12 6-pounder gun anti-tank guns.
The Ordnance QF 3 pounder gun was a 47 mm British tank gun based on the Ordnance QF 3 pounder Vickers naval gun, mounted on Vickers Medium Tanks in the 1920s and 1930s.
The initial Pedrail design coming from Murray Sueter's discussions with Diplock was for a 25 ton vehicle on two pedrail tracks carrying a 12-pounder gun in a turret.