Civilization IV is a 2005 turn-based strategy developed by Firaxis, and created by Sid Meier. The premise of the game is starting with a band of settlers in the year 4000 B.C. and creating a civilization to stand the test of time. Once the player enters the Renaissance Era and beyond they have the ability to create units armed with many firearms. While the graphics are low quality (Which makes some guns difficult to I.D.), many guns are very intricate in their design and easily recognizable.
The following weapons are seen in the video game Civilization IV (and expansion packs):
Single Action Army
If the player is granted a Great General in the Industrial Age and beyond, the Unit is seen wielding a blocky looking Single Action Army. The look of the General appears to be based off of George S. Patton, so the use of a Colt SAA is fitting.
Colt Single Action Army w/ 4.75" barrel ('Quick-Draw' / 'Civilian' model) - .45 Colt
The Great General brandishing his Colt Revolver. Note he is named Ivan the Terrible - All granted Great Person units are randomly named, leading to this.
Unknown Suppressed Pistol
The Industrial Age and later Great Spy's (based off James Bond) icon shows an unknown suppressed handgun.
The icon for the Great Spy in the late part of the game shows an unknown suppressed handgun.
The Industrial Age and later Spy's icon shows a suppressed Walther PPK.
Walther PPK with suppressor - .380 ACP
The icon for the Spy in the late part of the game shows a suppressed Walther PPK.
Sa. Vz.61 Skorpion
The SAM Infantry unit wields Skorpions whenever they attack (or are attacked by) ground-based units.
Skorpion Sa. Vz.61 - .32 ACP (7.65x17mm)
The SAM Infantry Unit points his Skorpion.
The Paratrooper unit (Based off of US WWII Paratroopers) wield M1 Thompsons.
M1 Thompson with 20-round magazine - .45 ACP
The Paratrooper unit scouting out the terrain armed with M1 Thompsons.
M3 Grease Gun
The flag for the Red Syndicate in the "Final Frontier" scenario shows the silhouette of an M3 Grease Gun.
The Red Syndicate's flag shows an M3 Grease Gun.
The Cavalry unit (Based off the US Cavalry), is seen using what appears to be a Spencer Carbine breechloader.
Spencer Model 1860 Carbine
The Cavalry unit guards a river with their Spencer carbines.
The Russian Cossack unit wields what appears to be a Mosin Nagant, which was a standard issue rifle for them during the later 19th century.
Imperial Russian Mosin Nagant M1891 Dragoon - 7.62x54mm R
The Russian civilization's special Cossack units armed with their Mosins.
The Infantry unit (Based off of WWII-era US Army soldiers) are equipped with very blocky M1 Garand rifles.
M1 Garand semiautomatic Rifle with leather M1917 sling - .30-06
The Infantry Unit stands guard with his trusty M1 Garand.
The Ottoman Janissary, French Musketeer, and Musketman units all use shoulder-muskets of various unknown make. The icon for the Rifling technology shows an unknown percussion cap rifle.
The Janissary, the Ottoman civilization's special unit, armed with an unknown musket.
The Musketeer, the French civilization's special unit, armed with an unknown musket.
The Musketman armed with an unknown musket. Note how these units (as well as the above Musketeers) are left-handed shooters, a rarity in video games.
The Percussion cap rifle on the icon for the Rifling technology.
The Rifleman unit is armed with an Baker Rifle.
Baker Rifle (1801-1837), Caliber - 0.625 inch (15.9 mm)
The Rifleman unit aiming their Baker Rifles.
The Cuirassier unit is armed with Matchlock Muskets.
European Matchlock musket.
The Cuirassier unit brandishing Matchlock muskets.
The Oromo Warrior unit is armed with a Kabyle Musket.
The Oromo Warrior, the Ethiopian civilization's special unit, armed with an Kabyle Musket.
Brown Bess Musket
The British Redcoat unit wields Brown Bess Flintlock Muskets.
Modern Reproduction "Long Land Pattern" Brown Bess Infantry musket made from 1722-1768- .75 caliber
The Redcoat, the British civilization's special unit, guarding an Iron resource, armed with Brown Bess Muskets.
The Marine unit uses AK-47 assault rifles.
Type I AK-47, hybrid stamped/milled receiver with prototype slab sided magazine - 7.62x39mm
The Marine with an AK-47.
In the "Next War" scenario, Automaton units are armed with scoped AK-103s with foregrips.
The Automaton unit armed with the AK-103.
In the "Road to War" scenario, Modern Infantry units are armed with the M16A2.
The Modern Infantry unit armed with the M16A2. Though crudely modeled, the rifles feature the A2-style rounded handguards, A2 sights, heavy barrels, and brass deflectors.
M4A1 Carbine w/ M203
The American Navy SEAL Unit wields M4A1 Carbines with mounted M203 Grenade Launchers (which are unusable). The M4s also seem to have optical scopes and suppressors. Unlike most movies and video games, the guns fire nearly as loud as they normally would.
M4A1 carbine (5.56x45mm) with M68 Aimpoint red dot scope, flip-up rear sight, and M203 grenade launcher (40mm)
The Navy SEAL, the American civilization's special unit, armed with his M4A1 Carbine. Notice the unusable M203 grenade launcher, suppressor, and crudely modeled optical sight.
In the "Road to War" scenario, German Infantry units are armed with the FG 42 fitted with a Zeiss ZF4 scope.
The German Infantry unit armed with the FG 42.
Custom Remington 870
In the "Next War" scenario, Cyborg units are armed with Remington 870. These shotguns are equipped with pistol grips, box magazines, and SPAS-12-style folding stock.
The Cyborg unit armed with the custom Remington 870.
The Machine Gun unit (based off of British WWI troops) are equipped with Vickers MK1 Machine Guns.
Vickers Mk1 Machine Gun - .303 British
The Machine Gun unit ready to fire their Vickers machine guns.
The Tank, Panzer, Gunship, Transport, and Modern Armor units are all armed with the Browning M1919.
Browning M1919A4 - .30-06 Springfield
The Tank unit armed with a Browning M1919.
The Panzer unit (the German civilization's special unit) is armed, erroneously, with the Browning M1919.
The Transport unit is armed with dual Browning M1919s.
The Gunship unit is armed, erroneously with three Browning M1919s. These should be two M134 miniguns, two Mk. 19 grenade launchers, or one of each, and a sensor probe on the nose.
The Modern Armor unit armed with a Browning M1919.
The Mobile Artillery and Modern Armor units are armed with the Browning M2.
Browning M2HB - .50 BMG (12.7x99mm)
The Mobile Artillery unit (an M109 Paladin) armed with a Browning M2.
The Modern Armor unit armed with a Browning M2.
The Mobile SAM unit is armed with an M240C.
The Mobile SAM unit armed with an M240C.
In the "Road to War" scenario, Type 97 Chi-Ha tanks are erroneously armed with MG42 machine guns.
The Type 97 Chi-Ha Tank unit armed with an MG42.
ZTZ-99 tanks in the "Road to War" scenario are erroneously armed with DShK machine guns.
The ZTZ-99 tank armed with a DShK machine gun.
The Anti-Tank unit wields the Panzerschreck.
Panzerschreck rocket launcher - 88mm
The Anti-Tank wielding their Panzerschrecks.
The SAM Infantry unit wield FIM-43 Redeyes. As their name implies, they use these against aircraft only, opting to use their aforementioned Skorpions against any ground unit.
The SAM Infantry with the FIM-43 Redeye.
The Grenadier unit will use Fuse Grenades as a primary weapon alongside their sabers.
Grenadier units armed with their grenados.
The Cannon unit is represented by Napoleonic era cannons.
The Cannon unit defending a hill.
The Caravel, Carrack, Ship of the Line, Privateer, East Indiaman, Galleon, Frigate, and Ironclad units are all equipped with naval cannons.
The Caravel unit's naval cannons.
The Carrack (The Portuguese civilization's special unit) unit's naval cannons.
The Ship of the Line unit's naval cannons.
The Privateer unit's naval cannons.
The East Indiaman (The Dutch civilization's special unit) unit's naval cannons.
The Galleon unit's naval cannons.
The Frigate unit's naval cannons.
The Ironclad unit's naval cannons.
LeFH 18 howitzer
Leichte Feldhaubitze 18/40 field gun displayed in Hämeenlinna Artillery Museum - 105mm
Bofors 40mm L/60 AA gun in a wheeled trailer mounting - 40x311mmR
The Anti-Air Gun unit. This unit only appears in the "Road to War" scenario.
M3 37mm anti-tank gun
The Anti-Tank Gun unit. This unit only appears in the "Road to War" scenario.
15cm sFH 18
sFH 18 howitzer displayed at CFB Borden Military Museum, Ontario, Canada - 150mm
The Heavy Artillery unit. This unit only appears in the "Road to War" scenario.
88mm FlaK 36
German FlaK 36 (note two-piece barrel with locking collar) - 88x571mm R
The Improved Anti-Air Gun unit. This unit only appears in the "Road to War" scenario. These are probably supposed to be FlaK 37s, the dedicated AA gun version of the German 88, but they have the two-piece FlaK 36 barrel (the 37 could use this, but tended to have the older one-piece FlaK 18 barrel) and lack the follow-the-pointer dials on the gun cradle, so there is no feature that would identify them as 37s.