The Ordnance QF 25-pounder, or more simply 25-pounder or 25-pdr, with a calibre of 3.45 inches (87.6 mm), was a piece of field artillery used by British...

the gun was largely replaced in the tank role by the 84mm calibre, Ordnance QF 20 pounder, and in the anti-tank role by the BAT, MOBAT and 120 mm L6...

that the original models make when firing. This QF 2-pounder was not the same gun as the Ordnance QF 2-pounder, used by the British Army as an anti-tank...

Centaur. When the Cromwell went into combat in 1944, it was armed with the Ordnance QF 75 mm gun, which was a redesign of the 6-pounder to take US 75 mm ammunition...

The Ordnance QF 2-pounder (QF denoting "quick firing"), or simply "2 pounder gun", was a 40 mm (1.575 in) British anti-tank gun and vehicle-mounted gun...

The Ordnance QF 18-pounder, or simply 18-pounder gun, was the standard British Empire field gun of the First World War era. It formed the backbone of...

The Ordnance QF 13-pounder (quick-firing) field gun was the standard equipment of the British and Canadian Royal Horse Artillery at the outbreak of World...

The Ordnance QF 3-pounder Vickers (47 mm / L50) was a British artillery piece first tested in Britain in 1903. It was used on Royal Navy warships. It...

numerals to denote Marks (models) of ordnance until after World War II. Mark V indicates this was the fifth model of QF 4-inch gun. Tony DiGiulian quotes...

The Ordnance QF 25-pounder Short was an Australian variant of the British Ordnance QF 25-pounder field gun/howitzer. The gun was developed by modifying...

and manufactured by the Elswick Ordnance Company, part of Armstrong Whitworth. They were developed to exploit the new "QF" technology, which involved loading...

Ordnance, QF 3.7-inch howitzer is a mountain gun, used by British and Commonwealth armies in the First and Second World Wars, and between the wars. The...

The Ordnance QF Hotchkiss 6 pounder gun Mk I and Mk II or QF 6 pounder 8 cwt were a family of long-lived light 57 mm naval guns introduced in 1885 to defend...

numerals to denote Marks (models) of ordnance until after World War II. This was the fourth model of 4-inch QF naval gun. Variants Mk XII = Mark 12,...

The QF 4.7 inch Gun Mark V originated as a 4.7 in (120 mm) 45-calibre naval gun designed by the Elswick Ordnance Company for export customers and known...

designation Ordnance QF 25-pdr on Carrier Valentine 25-pdr Mk 1, was a British self-propelled gun vehicle based on the Valentine tank and armed with the QF 25-pounder...

The Ordnance QF 4.5-inch howitzer was the standard British Empire field (or "light") howitzer of the First World War era. It replaced the BL 5-inch howitzer...

ballistic performance of the QF 5.25 was very good, with a maximum range of 24,070 yd (22,010 m) at 45 degrees with an 80 lb (36 kg) HE shell. In comparison...

The QF 2.95-inch mountain gun was the designation given by the British to a Vickers 75 mm calibre gun. It was originally produced for the Egyptian Army...

designs were introduced. The gun was also used as the basis for the Ordnance QF 32-pounder anti-tank gun variant used on the Tortoise heavy assault tank...

The Ordnance QF 12-pounder 8 cwt was a Royal Navy "landing gun" intended for navy use ashore. "8 cwt" refers to the weight of the gun and breech, approximately...

Ordnance QF 13 pounder Mk III anti-aircraft gun, also known as 13 pounder 6 cwt, was an early British improvisation in World War I to adapt the QF 13-pounder...

(models) of ordnance until after World War II. Mark XVI indicates this was the sixteenth model of QF 4 inch gun. "British 4"/45 (10.2 cm) QF HA Marks XVI...

The QF 3-inch 20 cwt anti-aircraft gun became the standard anti-aircraft gun used in the home defence of the United Kingdom against German Zeppelins airships...

L/52 rifled design by the Royal Ordnance Factories, intended for use in armoured fighting vehicles, replacing the older QF 20-pounder (84 mm) gun mounted...

Ordnance QF 3 inch howitzer was a howitzer fitted to British cruiser and infantry type tanks of the Second World War so they could fire a smoke shell...

Nordenfelt was considerably lighter. The UK adopted a 42-calibre version as Ordnance QF 6-pounder Nordenfelt Mk I, Mk II, Mk III. They were originally mounted...

above, such as the QF 12-pounder 12 cwt and QF 6-inch naval gun, and howitzers, such as the QF 4.5-inch howitzer and Ordnance QF 25-pounder gun-howitzer...

Regia Marina. In British service the guns fired the same 3-inch, 12.5 lb shell as QF 12-pounder guns. Cordite Cartridges circa. 1905 Mk II Common pointed...

Quick-firing (QF) artillery to be adopted by the Royal Navy as the Ordnance QF 3 pounder Hotchkiss, built under licence by the Elswick Ordnance Company. By...