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|Ship out of service= ...[U.S. Navy]] during [[World War II]]. She served in the [[Atlantic Ocean]] the [[Pacific Ocean]] and provided destroyer escort protection against [[submar

{{about|the anti-torpedo boat gun|the rifle calibre "machine gun"|Nordenfelt gun}} |origin={{flagicon|United Kingdom}}

...nst the Shogitai 1868.jpg|thumb|Armstrong gun deployed by [[Japan]] during the [[Boshin war]] (1868–69).]] ...lso been used to describe Armstrong's [[built-up gun]] construction system of a [[wrought-iron]] tube surrounded by multiple wrought-iron strengthening c

<!-- Artillery specifications --> The '''Main Battle Tank and Light Armour Weapon''' ('''MBT LAW''') is a disposa

|origin= [[United Kingdom]] <!-- Artillery specifications -->

...to arm [[United Kingdom|British]] aircraft for attacking ground targets in the [[World War II|Second World War]]. ...=William Kimber |location=London |date=1972 |isbn=7183-0362-8 |chapter=10, The 40mm Guns

|used_by=[[United States Navy]]<br>[[Royal Hellenic Navy]] ...sian Civil War]]<br>[[Greco-Turkish War]]<br>[[World War II]] ''As coastal artillery''

...re taken on top of one of the dual 14"/45 [[caliber#Caliber as measurement of length|caliber]] gun turrets, 1918. |origin= {{flag|United States}}

|origin= {{flag|United States}} |part_length= {{convert|210|in|m}} bore (70 [[Caliber#Caliber as measurement of length|calibres]])

The '''30mm DS30M Mark 2''' is the [[Royal Navy]]'s new 30&nbsp;mm Automated Small Calibre Gun (ASCG) system, ...a variety of targets. The safety, reliability and low life-cycle costs of the Bushmaster system added to its overall value."<ref name=globalsecurityMk44/

...fired the [[first American shots fired in World War II|first American shot of World War II]] at [[Attack on Pearl Harbor|Pearl Harbor]] on 7 December 194 |used_by=<small>{{flagicon|United States|size=22px}} United States<br>{{UK}}<br>{{flagicon|Canada|size=22px}} Canada

<!-- Many sources quote 114mm as the calibre but it is in fact 113, please do not change -->{{Infobox Weapon ...8 Mod 1 naval gun on [[HMS Northumberland (F238)|HMS ''Northumberland'']]. The multi-faceted gunhouse is designed to reduce [[radar cross section]].

...Royal Navy, 1930-2000: innovation and defence'', p19-41:, Pugh, ''Managing the aerial threat''. </ref> [http://www.hnsa.org/doc/br224/img/dia1.jpg Illustration of a 4.7 inch single mount]

...from a tendency to burst.<ref name=sag30>{{cite book |title=Send a Gunboat The Victorian Navy and Supremacy at Sea, 1854-1904 |last=Preston |first=Antony {{artillery-stub}}

|type= [[Naval gun]]<br>[[Coastal artillery|Coast Defence gun]] |used_by=[[United Kingdom]]

|origin= {{Flag|United States}} |used_by={{Flag|United States}}

|caption=Mk I coast defence gun, [[Hong Kong Museum of Coastal Defence]] |origin= [[United Kingdom]]

|caption=Aft Mk XI guns of [[HMS Vanguard (1909)|HMS ''Vanguard'']] ...British]] [[Caliber#Caliber_as_measurement_of_length|50-calibres]] [[naval artillery|naval gun]]s that were mounted as primary armament on [[dreadnought battles

...avalhistory.flixco.info/H/76624x53535/8330/a0.htm This is understood to be the maximum possible range at 45° elevation, which was possible for siege moun ...on [[battleship]]s and [[battlecruiser]]s from 1906. It first appeared on the revolutionary {{HMS|Dreadnought|1906|6}}.

|origin= [[United Kingdom]] ...rrel & breech<br> Mk II - V 45 tons<ref name=Gunnery1887TableXVI>Text Book of Gunnery, 1887. Table XVI, Pages 312 - 313</ref><br>Mk VI, VII : 46 tons

|caption=Crewmen of [[HMS Goliath (1898)|HMS ''Goliath'']] photographed before guns |origin= [[United Kingdom]]

|caption=Aft guns of [[HMS Emperor of India (1913)|HMS ''Emperor of India'']] ...n}}. Some guns were designated H or L to designated they were intended for the heavy or light shell.</ref>

|caption=Forward turret of [[HMS Hood (1891)|HMS ''Hood'']] |origin= [[United Kingdom]]

...gned for the ships of the [[Royal Navy]] in the late 1930s. This gun armed the [[King George V class battleship (1939)|''King George V'' class battleships ...ip|''Nelson'' class battleships]], the British reverted to the combination of lower velocities and (relatively) heavier shells in this weapon.

|caption=An animation representing the loading cycle of the Mark I turret for the BL 15 inch Mark I. <!-- Artillery specifications -->

|origin= [[United Kingdom]] ...slow burning Brown "cocoa" powder - a form of gunpowder) charge. Text Book of Gunnery, 1902. Table XII, Page 336</ref>

|caption=Guns of HMS Rodney at maximum elevation, 1940 <!-- Artillery specifications -->

| caption = On the [[monitor (warship)|monitor]] {{HMS|General Wolfe|1915}} | origin = [[United Kingdom]]

<!-- Artillery specifications --> ...y naval gun introduced in 1918 for destroyers, to counter a new generation of heavily-armed destroyers Germany was believed to be developing.

<!-- Artillery specifications --> ...tish medium-velocity naval gun introduced in 1916 as secondary armament on the [[Renown class battlecruiser|''Renown'' class battlecruiser]]s and [[Glorio

|origin= [[United Kingdom]] ...{{convert|3|lb|1|oz|kg|abbr=on}} cordite MK I size 5 propellant (Text Book of Gunnery, 1902)</ref>

...icon|United Kingdom}} [[United Kingdom of Great Britain and Ireland|United Kingdom]] ...icon|United Kingdom}} [[United Kingdom of Great Britain and Ireland|United Kingdom]]

...er_as_measurement_of_length|calibres]])<ref name=Handbook1913>HANDBOOK for the 4" Mark VII. and VIII. B.L. Guns 1913</ref> ...]] projectile, using 5 lb 4 oz cordite MD size 16 propellant. HANDBOOK for the 4" Mark VII. and VIII. B.L. Guns 1913.</ref>

|caption= One of [[HMS Chester (1915)|HMS ''Chester'''s]] 5.5 inch guns at the [[Imperial War Museum]], London |length= {{convert|6.985|m|in}} bore (50 [[Caliber#Caliber as measurement of length|cal]])

|caption=Mk I coast defence gun outside entrance to the [[Hong Kong Museum of Coastal Defence]] ...aliber as measurement of length|calibres]])<ref name=Gunnery1902>Text Book of Gunnery 1902, Table XII page 336</ref>

|origin= [[United Kingdom]] ...added to strengthen the guns. Treatise on Service Ordnance 1893; Text Book of Gunnery 1902</ref>

...icon|United Kingdom}} [[United Kingdom of Great Britain and Ireland|United Kingdom]] |type=[[Naval gun]]<br>[[Coastal artillery|Coastal defence gun]]<br>[[Field gun|Heavy field gun]]

...asemate gun on [[HMS Warspite (1913)|HMS ''Warspite'']] after the [[Battle of Jutland]] ...e figure used in range tables. New guns were quoted with a muzzle velocity of 2,845 feet per second. Handbook, 1917, Page 5</ref>

...ser]]s and secondary armament on [[pre-dreadnought battleship]]s. A number of other very similar 6-inch 50-calibre guns found their way into temporary Br ...ritain reverted to 45-calibres guns in new warships from 1914 onwards with the [[BL 6 inch Mk XII naval gun|BL 6 inch Mk XII]] gun.

|origin= [[United Kingdom]] ...}<br>{{navy|Canada}}<br>{{navy|India}}<br>{{navy|Peru}}<br>{{navy|Republic of China}}<br>{{navy|China}}

...IV gun on [[disappearing gun|disappearing carriage]] at [[Hong Kong Museum of Coastal Defence|Lei Yue Mun Fort]], Hong Kong ...icon|United Kingdom}} [[United Kingdom of Great Britain and Ireland|United Kingdom]]

...n=Turrets for [[HMS Shannon (1906)|HMS ''Shannon'']] under construction at the Vickers Works, Barrow ...icon|United Kingdom}} [[United Kingdom of Great Britain and Ireland|United Kingdom]]

|origin= [[United Kingdom]] <!-- Artillery specifications -->

|caption=''Hawkins'' class cruisers were the only ships mounting BL 7.5 inch Mk VI guns. ...icon|United Kingdom}} [[United Kingdom of Great Britain and Ireland|United Kingdom]]

|origin= [[United Kingdom]] ...required for) Laid on the Table by the Hon. Mr Ballance, with the Leave of the House.]</ref>

|origin= [[United Kingdom]] |used_by={{navy|United Kingdom}}<br>{{navy|Australia}}

|caption=Aft guns of [[HMS Defence (1907)|HMS ''Defence'']] trained to port ...1920<ref>1908 - 1920 : Dates of commissioning and scrapping of the ships. The guns were not used again after removal.</ref>

...mpany|Elswick]] in 1901, on [[Rottnest Island]], Western Australia. It has the distinctive box-shaped gunhouse widely used with it in [[World War II]] |origin= [[United Kingdom]]

|origin= [[United Kingdom]] ...ns barrel & breech;<br>Mk V - VII : 22 tons<ref name=Gunnery1902>Text Book of Gunnery 1902, Table XII Page 336</ref>

|origin= [[United Kingdom]] |weight=25 tons barrel & breech<ref name=Gunnery1902>Text Book of Gunnery 1902, Table XII Page 336</ref>

...r (turned sideways). It operates the trapeze seen above the sights, moving the sights to adjust for lead. <!-- Artillery specifications -->

|origin= [[United Kingdom]] |part_length=bore of {{convert|75|in|m}}<ref name=Hogg&Thurston1972Page27/>

...ns">[http://www13.plala.or.jp/aconit/e-nerima_soubi.html "Exhibision (sic) of Equipments".] Retrieved on July 29, 2008.</ref> ...gunner and loader), but may be used by a single operator at a reduced rate of fire.

|caption= A pair of Mk 12 cannons in the forward fuselage of a [[Chance-Vought]] [[F-8 Crusader]]. |origin= United States

|image= [[File:Canon DEFA MG 1359.jpg|300px|DEFA cannon of a [[Mirage III]] in twin mount.]] |caption= DEFA cannon of a [[Mirage III]] in twin mount.

The '''EOC 10 inch 45 calibre gun''' were various similar 10-inch naval guns de ...k the ship over in 1903 as [[HMS Swiftsure (1903)|HMS ''Swiftsure'']], and the guns were designated '''BL 10 inch Mk VI''' in UK service. These guns fired

...th=Bore {{convert|540|in|m|sigfig=5}} (45 [[Caliber#Caliber as measurement of length|cal]]) The '''EOC 12 inch 45 calibre gun''' were various similar 12-inch naval guns de

The '''BL 14 inch 45 calibre gun''' were various similar naval guns designed an ...rnment and completed as [[HMS Canada (1913)|HMS ''Canada'']] and served in the Royal Navy in World War I, with its guns designated '''BL 14 inch Mk I'''.

| weight = 6,372&nbsp;kg with 1,190&nbsp;rds of ammunition (above deck), 9,902&nbsp;kg (total). <!-- Artillery specifications -->

...urately measure target aircraft speed and direction.<ref>Weapon Control in the Royal Navy 1935-45, Pout </ref> ==The Gyro Rate Unit==

...hog_launcher.jpg|right|thumb|Hedgehog anti-submarine mortar with full load of practice bombs, ''circa'' 2002.]] ...ing2.jpg|thumbnail|right|Hedgehog bombs fired from USS Moberly detonate on the ocean floor]]

|caption=HS.404 in the TCM-20 twin anti-aircraft configuration, displayed at the Israeli Air Force Museum. <!-- Artillery specifications -->

<!-- Artillery specifications --> ...vy]] escort ships on a mounting stabilised for pitch and roll from 1955 to the mid&ndash;1980s.

:''This article is about the .50 caliber M2 machine gun. For the .30-06 M2 machine gun, see [[M1919 Browning machine gun]].'' |origin= {{flag|United States}}

[[File:Cannon M39A2.png|thumb|M39 cannon in the nose of a Brazilian F-5]] ...was used on a number of [[fighter aircraft]] from the early 1950s through the 1980s.

|weight=480 kg (without ammunition, including 387 kg of ballast) <!-- Artillery specifications -->

{{About|the World War II tank and anti-tank gun|the anti-aircraft "pom-pom" autocannon|QF 2 pounder naval gun}} <!--SCROLL DOWN IN ORDER TO EDIT THE ARTICLE-->

<!-- Artillery specifications --> ...as large, but it initially fired the same [[Lyddite]] and Steel shells as the Hotchkiss.<ref>Treatise on ammunition 10th Edition 1915. War Office, UK. Pa

...uld use a simpler box magazine with 30 rounds. It remained in service into the 1950s. ...one Oerlikon cannon was about [[Pound sterling|£350]], while the cost of the Polsten was between £60 and £70.

...move the mount to match the pointers rather than having to try and aim at the target aircraft. ==The Pom-Pom Director Mark I - III==

|origin= [[United Kingdom]] ...convert|1|lb|15|oz|kg|abbr=on}} cordite Mk I size 15 propellant (Text Book of Gunnery 1902); {{convert|2258|ft/s|m/s|abbr=on}} in British service in WWI

...]] turret for [[HMS Shannon (1906)|HMS ''Shannon'']] under construction at the Vickers works, Barrow ...icon|United Kingdom}} [[United Kingdom of Great Britain and Ireland|United Kingdom]]

...ground.<br>Photo courtesy of the '''[http://www.cerberus.com.au Friends of the Cerberus]''' |cartridge=separate [[List of British ordnance terms#QF|QF]] {{convert|14|lb|kg|sigfig=3}} or {{convert|1

|caption= Mk II dated 1903 at the Imperial War Museum, London |origin= {{flag|United Kingdom}}

{{about|the anti-aircraft autocannon|the World War II anti-tank gun|Ordnance QF 2 pounder}} |caption= The quadruple 2 pdr mounting (Mk.VII) of [[HMS Kelvin (F37)|HMS ''Kelvin'']]

|caption= 3.7 inch Anti-Aircraft Gun on display at the [[United States Army Ordnance Museum|U.S. Army Ordnance Museum]] in [[Aberdeen, Mary |used_by=UK and [[Commonwealth of Nations|Commonwealth]]

|caption=Egyptian gun captured by Israel in the 1956 war. ...&nbsp;inches, the term "3 inch" was only ever used to identify this gun in the World War I era, and hence this is what writers are usually referring to by

|rate=30 / minute<ref>30 rounds per minute is the figure given by Elswick Ordnance for their 40-calibres model. Quoted in [ht <!-- Artillery specifications -->

...ber as measurement of length|calibre]] family of guns up to the 1970s. For the current unrelated 55-calibre Royal Navy gun, see [[4.5 inch Mark 8 naval gu ...tish nominally 4.5&nbsp;inch naval guns, the QF Mk I has an actual calibre of 4.45&nbsp;inches (113&nbsp;mm)<ref>Jane's Ammunition Handbook, 1999-2000 Ed

...icon|United Kingdom}} [[United Kingdom of Great Britain and Ireland|United Kingdom]] |type=[[Naval gun]]<br>[[Field gun|Medium field gun]]<br>[[Coastal artillery|Coastal defence gun]]

|part_length={{convert|212.6|in|m}} (45 [[Caliber#Caliber as measurement of length|cal]])<ref Name=Hogg&Thurston1972Page108 /> <!-- Artillery specifications -->

|type= [[Naval gun]]<br>Heavy [[anti-aircraft gun]]<br>[[Coastal artillery|Coastal defence gun]] ...I; 554 earlier types built for the navy; about 107 earlier types built for the Army in WWI.</ref>

<!-- Artillery specifications --> ...://www.hnsa.org/doc/br224/part1.htm|title=THE 4-in. Q.F. MARK XVI* GUNS ON THE H.A. TWIN MARK XIX MOUNTING. |publisher=Historic Naval Ship Association|acc

|caption=Mk IV gun from [[HMS Lance (1914)|HMS ''Lance'']] at the Imperial War Museum, London |origin= [[United Kingdom]]

...icon|United Kingdom}} [[United Kingdom of Great Britain and Ireland|United Kingdom]] |type= [[Naval artillery|Naval gun]]<br>[[Coastal artillery|Coast defence gun]]

...h ={{convert|262.5|in|m}} bore (50 [[Caliber#Caliber as measurement of length|cal]]) <!-- Artillery specifications -->

...cases for [[cordite]] propellant were much shorter. A shell stands next to the cartridge. |origin= [[United Kingdom]]<br>license-produced in [[Japan]]

{{otheruses4|the 1880s Hotchkiss gun|the World War II anti-tank and Molins Class M gun|Ordnance QF 6 pounder}} ...flagicon|Russia}} [[Russian Empire|Russia]]<br>{{flagicon|Japan}} [[Empire of Japan|Japan]]

...as measurement of length|calibres]] version at Gyltö, western archipelago of Finland, 1999. Photo by Ove Enqvist ...abbr=on}} and maximum range {{convert|4500|yd}}. 5600 metres is quoted for the 48 calibres model at Krepost Sveaborg, Helsinki.</ref>

...Rarden Image-Warrior Infantry Fighting Vehicle.jpg|thumb|right|Close up of the [[30mm]] RARDEN cannon on a [[Warrior tracked armoured vehicle]].]] ...ime, were both part of the [[Ministry of Defence (United Kingdom)|Ministry of Defence]].

|origin={{flagcountry|United Kingdom}} ...d service and 231 sea service by the Royal Gun Factory. From the Report of the Select Committee on Ordnance, 1863.</ref>

|caption=Launceston Volunteer Artillery, Tasmania, 1902 |origin= [[United Kingdom]]

|origin= [[United Kingdom]] |wars= [[New Zealand Land Wars]] [[Bombardment of Kagoshima]] [[Bombardment of Shimonoseki]]

|caption=On broadside ironclad [[HMS Sultan (1870)|HMS ''Sultan'']] in the 1890s |origin= [[United Kingdom]]

|wars=[[Bombardment of Alexandria (1882)]] ...5|in|m}} (bore + chamber)<ref name=TOC1877page292>Treatise on Construction of Service Ordnance 1877, page 292</ref>

|origin= [[United Kingdom]] ...convert|198|in|m}} (bore)<ref name=TOA1877page292>Treatise on Construction of Service Ordnance 1877, page 292</ref>

...urret on [[HMS Hotspur (1870)|HMS ''Hotspur'']]. A shell is suspended near the muzzle ready for loading ...t=£1,715 13s.<ref>Unit cost of £1,715 13 shillings 5 pence is quoted in "The British Navy" Volume II, 1882, by Sir Thomas Brassey. Page 38</ref>

...ber=15<ref name="Service Ordnance 1879, page 284">Treatise on Construction of Service Ordnance, 1879, page 284</ref> ...t_cost=£2,154<ref>Unit cost of £2,153 13 shillings 9 pence is quoted in "The British Navy" Volume II, 1882, by Sir Thomas Brassey. Page 38</ref>

|origin= [[United Kingdom]] |wars=[[Bombardment of Alexandria (1882)]]

...4 gunpowder is quoted for Mk III steel tube gun in Table XII in "Text Book of Gunnery 1902".</ref> <!-- Artillery specifications -->

...de by [[Royal Arsenal|Royal Gun Factory]] in 1870, at the Royal Australian Artillery Memorial, Canberra |origin= [[United Kingdom]]

|origin= [[United Kingdom]] |wars=[[Bombardment of Alexandria (1882)]]

...Royal Charles]]'', one of the three [[Royal Navy]] ships to be fitted with the advanced Rupertinoe guns.|alt=xx]] ...naval gun designed by, and named after, [[Prince Rupert of the Rhine]] in the 17th century.

|caption= Squid anti-submarine mortar on display at the [[Devonport Naval Base]] |designer= [[Directorate of Miscellaneous Weapons Development]]

...nd '''m/41''' (Model 1941) [[sniper rifle]].<ref>Jones, D: ''Crown Jewels: The Mauser in Sweden'', pp. 37, 59, 81, 93. Collector Grade Publications, 2003. ...ary [[Lee-Enfield]] rifle) instead of the "cock-on-opening" style found on the German [[Gewehr 98]].

...ard an aircraft carrier, each lower half was retouched in black to conceal the roll rudders. |unit_cost= 20,000 yen (in the year 1941)

...s of the ''Britannica's'' bicentennial were held, and the three volumes of the 1st edition were reprinted in facsimile. ==The ''Britannica'' Banquet==

|image_neshan=Coat of arms of Persia (16th century - 1907).png |title=[[Shahanshah|Shahanshah of Persia]]

...er|muzzleloading]] rifles and pistols in FFFG granulation size. [[Quarter (United States coin)|Coin]] (diameter 24 mm) for comparison.]] ...le, but instead use [[smokeless powder]]. [[Antique]] firearms or replicas of antique firearms are often used with [[black powder substitute]].

{{History of war}} ...[[military tactics]], like [[ambush]]es, [[sabotage]], raids, the element of surprise, and extraordinary [[Motion (physics)|mobility]] to harass a large

...d Task Force One Five Zero (CTF-150) assemble in a formation in the [[Gulf of Oman]], 6 May 2004]] ...ns in the [[Indian Ocean]]) to support [[Operation Enduring Freedom - Horn of Africa]] (OEF-HOA). These activities are referred to as [[Maritime Security

|partof=the [[War on Terror]] |caption=[[United States Marine Corps|U.S. Marines]] during Operation El Dorado.