muzzle-loading musket with a plug bayonet attached from 1606. The weapon's instructional manual and specifications is shown above. The term
bayonette itself dates back to the 16th century, but it is not clear whether bayonets at the time were knives that could be fitted to the ends of firearms, or simply a type of knife. For example, Cotgrave's 1611
Dictionarie describes the bayonet as "a kind of small flat pocket dagger, furnished with knives; or a great knife to hang at the girdle". Likewise,
Pierre Borel wrote in 1655 that a kind of long-knife called a
bayonette was made in
Bayonne but does not give any further description. There are some accounts that place the invention of the bayonet in either France or Germany as early as 1570.
Plug bayonets infantryman installing a plug bayonet. The first recorded instance of a bayonet proper is found in the Chinese military treatise, published in 1606. It was in the form of the , a
breech-loading musket that was issued with a roughly long plug bayonet, giving it an overall length of with the bayonet attached. It was labelled as a "gun-knife" () with it being described as a "short sword that can be inserted into the barrel and secured by twisting it slightly" that it is to be used "when the battle have depleted both gunpowder and bullets as well as fighting against bandits, when forces are closing into melee or encountering an ambush" and if one "cannot load the gun within the time it takes to cover two bu (3.2 meters) of ground they are to attach the bayonet and hold it like a spear". Early bayonets were of the "plug" type, where the bayonet was fitted directly into the barrel of the musket. The British socket bayonet had a spike with a triangular cross-section rather than a flat blade, with a flat side towards the muzzle and two fluted sides outermost to a length of . It had no lock to keep it fast to the muzzle, and was well-documented for falling off in the heat of battle.
Sword bayonets The 18th century introduced the concept of the
sword bayonet, a long-bladed weapon with a single- or double-edged blade that could also be used as a
shortsword. Its initial purpose was to ensure that riflemen could form an
infantry square properly to fend off cavalry attacks when in ranks with musketmen, whose weapons were longer. A prime early example of a sword bayonet-fitted rifle is the Pattern 1800 Infantry Rifle, later known as the "
Baker Rifle". Sword bayonets were used by German Jagers in the 18th century. The hilt usually had
quillons modified to accommodate the
gun barrel and a
hilt mechanism that enabled the bayonet to be attached to a
bayonet lug. A sword bayonet could be used in combat as a
sidearm, when detached from the musket or rifle. When the bayonet was attached to the musket or rifle, it effectively turned all
long guns into a
spear or
glaive, which made it suitable for both thrusting and cutting attacks. While the British Army eventually discarded the sword bayonet, the socket bayonet survived the introduction of the rifled musket into British service in 1854. The new rifled musket copied the French locking ring system. The decision to redesign the bayonet into a short sword was viewed by some as an acknowledgement of the decline in importance of the fixed bayonet as a weapon in the face of new advances in firearms technology. It was initially adopted by the German states in 1865; until the middle of WWI approximately 5% of every bayonet style was complemented with a sawback version, for example in Belgium in 1868, Great Britain in 1869 and Switzerland in 1878 (Switzerland introduced their last model in 1914). The original sawback bayonets were typically of the heavy sword-type, they were issued to engineers, with to some extent the bayonet aspect being secondary to the "tool" aspect. Later German sawbacks were more of a rank indicator than a functional saw. Generally, an average of 6% of all bayonets were sawbacks for non-commissioned officers. There were some exceptions, such as the kurzes Seitengewehr 1898 model, all of which were of the sawback design and meant for what was considered more prestigious units, such as machine gunners, telegraph troop and colonial troops. The sawback proved relatively ineffective as a cutting tool, and was soon outmoded by improvements in military logistics and transportation; most nations dropped the sawback feature by the early 20th century. In 1870, the US Army issued trowel bayonets to infantry regiments based on a design by Lieutenant-Colonel
Edmund Rice, a US Army officer and Civil War veteran, which were manufactured by the Springfield Armory. Besides its utility as both a fixed bayonet and a digging implement, the Rice trowel bayonet could be used to plaster log huts and stone chimneys for winter quarters; sharpened on one edge, it could cut tent poles and pins. Rice was given leave in 1877 to demonstrate his trowel bayonet to several nations in Europe. Despite its limitations, many modern
assault rifles (including
bullpup designs) retain a bayonet lug and the bayonet is issued by many armies. The bayonet is used for controlling prisoners, or as a weapon of last resort. Today's bayonets often double as multi-purpose
utility knives, bottle openers or other tools. Issuing one modern multi-purpose bayonet/knife is also more cost effective than issuing separate speciality bayonets, and field or combat knives.
Photo gallery File:Défilé de la Légion à Orange pour ses 40 ans de garnison.jpg|
Legionnaires of the
French Military with
FAMAS rifles and fixed bayonets. File:01 ak47.jpg|
Soviet AK-47 bayonet and scabbard. File:03 akm.jpg|
Soviet AKM type II bayonet, multi-purpose knife and wire-cutter when combined with its scabbard. File:NVA AKM Bayonet (2 of 2).JPG|Multi-purpose
AKM Type I bayonet of the
Nationale Volksarmee shown cutting a wire File:6kh4 wire cutter.jpg|
Soviet AKM type II bayonet and scabbard in wire-cutter configuration. File:Afghan policeman bayonet.jpg|
Afghan policeman with
AKM and AKM Type II bayonet. File:US-Military-M5-Bayonet1.jpg|The US
M5 bayonet and scabbard used with the
M1 Garand File:M6 Bayonet.jpg|The US
M6 bayonet and scabbard used with the
M14 rifle File:M7 Bayonet & M8A1 Sheath MOD.jpg|
M7 Bayonet and M8A1 Sheath used with the
M16 rifle File:M9bayonet2.jpg|Adopted in 1986, the US
M9 bayonet and scabbard used with the
M16 rifle and
M4 carbine. File:US-Military-M9-Bayonet-used-as-Wirecutter.jpg|
M9 bayonet and scabbard in wire-cutter configuration. File:USMC-110515-M-JG138-043.jpg|M9 bayonet-fitted
M4 carbine firing during secondary target drills. File:Bayonet OKC-3S - Ontario Knife Company.jpg|The
USMC OKC-3S Bayonet File:Combat knife attached to gun.jpg|
US Marines at bayonet practice in 2005. File:4th MARDIV Rifle Squad Competition- Day 3 230130-M-SU940-1631.jpg|US Marine with OKC-3S attached to an
M27 IAR in 2023. The USMC is one of only a few modern military forces to still teach bayonet fighting as part of basic training. File:SKS bayonet noBG.jpg|Folding an
SKS-type bayonet. File:People's Liberation Army Navy sailor with type 56 assault rifle.jpeg|A
Chinese sailor with a
Type 56 with the integral folding spike bayonet, 1986. File:Honor guard of the People's Liberation Army.jpg|
Chinese soldier with
QBZ-95 rifle and multi-purpose knife bayonet. File:Indian Army soldier on guard at the India Gate, New Delhi.jpg|
Indian Army Gurkha with
L1A1 (
FN FAL) and traditional bayonet. File:Present Arms fixing bayonet.JPG|
Japanese Ground Self Defense Force infantrymen with their
Howa Type 64 with bayonet fixed. File:Brazilian Army SOF.jpeg|
Brazilian Army paratroopers with
FN FAL rifles with Type C socket bayonets on parade. File:Early FN FAL.jpg|Early
FN FAL and bayonet. File:Kuwaiti soldier with his FN FAL rifle.jpg|
Kuwaiti soldier with his
FN FAL rifle with bayonet. File:L129A1 Sharpshooter rifle MOD 45162213 (L3A1 crop).jpg|British-issue L3A1 socket bayonet. Note the slot in the blade to attach the wire-cutter scabbard. File:L129A1 Sharpshooter rifle MOD 45162213 (L3A1 scabbard crop).jpg|L3A1 scabbard. Note the lug to attach the bayonet for wire cutting. File:Sacrifice honoured at National Act of Remembrance MOD 45163258.jpg|British servicemen with fixed L3A1 bayonets on
L85A2 rifles. The L3A1's blade is offset to permit firing. File:Palace guard at the royal palace, Oslo.jpg|Palace guard at the royal palace, Oslo. Note the G3-type rifle with a bayonet over the barrel. File:Glock Feldmesser FM 78.JPG|
Glock field knife/bayonet and its scabbard. The upper
crossguard is bent forward and can be used as a bottle opener. File:Defense.gov photo essay 120831-D-VO565-009.jpg|Irish Army Honor Guard. Note Steyr AUG with EICKHORN KCB-70 type multi-purpose bayonet File:Navy members of the Royal Guard of Honour - Flickr - NZ Defence Force.jpg|Royal New Zealand Navy Guard of Honour. Note Individual Weapon Steyr with American M7 bayonets. File:Changing the Guard ceremony in Québec during the summer 09.jpg|The
Royal 22nd Regiment of
Canada unfixing their bayonets. File:Marines Rehearse for Presidential Inauguration 130117-M-YO938-821.jpg|
Marines from
Marine Barracks Washington D.C. fix their bayonets during rehearsals for the presidential inauguration. File:LAPA FA Mod 3.svg|
Brazilian
LAPA FA-03. ==Linguistic impact==