A sectioned British World War I 18 pounder Shrapnel shell displayed at the Canadian War Museum, Ottawa

Shrapnel is the term commonly used to describe the metal fragments and debris thrown out by any exploding object, be it a high explosive (HE) filled shell or a homemade bomb wrapped with nails or steel balls. An explosive material is a material that either is chemically or otherwise Energetically unstable or produces a sudden expansion of the material usually accompanied A shell is a payload-carrying Projectile, which as opposed to shot, contains an explosive or other filling though modern usage includes large solid projectiles

Origin of term shrapnel

The word shrapnel is derived from the name of Major-General Henry Shrapnel (1761–1842), an English artillery officer, whose experiments—initially conducted in his own time, and at his own expense—culminated in the design and development of a new type of artillery shell. Henry Shrapnel ( June 3, 1761 - March 13, 1842) was a British Army officer and inventor most famously of the " Shrapnel England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland Artillery (from French artillerie) is a military Combat Arm which employs any apparātus machine

The term "Shrapnel" originally referred only to the spherical shot or musket balls dispersed when a shrapnel shell bursts, and this is still the technical meaning of the term, although it is now used to describe all types of high velocity debris thrown out from an explosion, and makes no differentiation to the process which created or produced the debris. A musket is a muzzle -loaded Smoothbore Long gun, which is intended to be fired from the shoulder

Dictionary definition

The Oxford English Dictionary documents that the term Shrapnel is often used to describe fragments or shot intentionally included in explosive devices, such as pipe casings, nails, or steel balls. The Oxford English Dictionary ( OED) published by the Oxford University Press (OUP is a comprehensive Dictionary of the English In Engineering, Woodworking and Construction, a nail is a pin -shaped sharp object of hard Metal, typically Steel,

For shells, bombs or other munitions, the technical term for these particles is fragments, splinters or shards, fragments being the preferred name in scientific documents on the subject.

Another term which can be used to describe a particle other than a bullet which causes a wound is "bomb fragment" or "bomb shard". These terms also include items which were not part of the original explosive device, but which are propelled as projectiles by the force of the explosive or impact.

Development of shrapnel shell

In 1784 Lieutenant Shrapnel of the Royal Artillery began the course to develop an anti-personnel weapon. The Royal Artillery, is the common name for the Royal Regiment of Artillery, is an Arm of the British Army. An anti-personnel Weapon is one primarily used to injure or kill people. At the time artillery could use "canister shot" to defend themselves from infantry or cavalry attack. Canister shot (or Case-shot) was a kind of Anti-personnel Ammunition used in Cannons It was similar to Grapeshot in which The Infantry is the oldest and most numerous of the Combat Arms in the Armed forces, and consists The Cavalry (from French cavalerie) is the second oldest of the Combat Arms, and as Soldiers or Warriors who fought mounted on

Instead of a cannonball, a tin or canvas container filled with small iron or lead balls was loaded. When fired, the container burst open during passage through the bore or at the muzzle, giving the effect of an oversized shotgun shell. A shotgun shell (shotshell is a self-contained cartridge loaded with shot or a slug designed to be fired from a Shotgun. At ranges of up to 300 m canister shot was still highly lethal, though at this range the shots’ density was much lower, making a hit on a human target less likely. At longer ranges, solid shot or the common shell — a hollow cast iron sphere filled with black powder — was used, although with more of a concussive than a fragmentation effect, as the pieces of the shell were very large and sparse in number. Gunpowder is a an explosive mixture of Sulfur, Charcoal and Potassium nitrate (also known as saltpetre/saltpeter that burns rapidly producing volumes

Shrapnel's innovation was to combine the multi-projectile shotgun effect of canister shot, with a delayed-action fuse to take the effect of canister shot to the enemy at a distance. In an Explosive, Pyrotechnic device or military Munition, a fuse (or fuze) is the part of the device that initiates function His shell was a hollow cast-iron sphere filled with a mixture of balls and powder, with a crude time fuse. If the fuse was set correctly then the shell would break open, either in front or above the intended target, releasing its contents (of musket balls). A musket is a muzzle -loaded Smoothbore Long gun, which is intended to be fired from the shoulder The shrapnel balls would carry on with the "remaining velocity" of the shell. In addition to a denser pattern of musket balls, the retained velocity could be higher as well, since the shrapnel shell as a whole would likely have a higher ballistic coefficient than the individual musket balls (see external ballistics). The ballistic coefficient ( BC) of a body is a measure of its ability to overcome air resistance in flight External ballistics is the part of the science of Ballistics that deals with the behaviour of a non-powered projectile in flight

The explosive charge in the shell was to be just enough to break the casing rather than scatter the shot in all directions. As such his invention increased the effective range of canister shot from 300 to about 1100 m.

This engraving shows a 12-pounder U. S. Shrapnel Shell ca. 1865. It is fitted with a Borman fuze, In the cutaway view, the dark grey is the wall of the shell, the medium grey is sulphur resin, the light grey are the musket balls, and the black is the bursting charge.

He called his device 'spherical case' shot, but in time it came to be called after him; a position formalised in 1852 by the British Government.

Initial designs suffered from the potentially catastrophic problem that friction between the shot and black powder during the high acceleration down the gun bore could sometimes cause premature ignition of the powder. This problem was overcome by placing the powder within a central metal tube, or a separate area within the hollow shell. As a buffer to prevent lead shot deforming, a resin was used as a packing material between the shot. A useful side effect of using the resin was that the combustion also gave a visual reference upon the shell bursting, as the resin shattered into a cloud of dust.

British artillery adoption

Comparison of original Shrapnel design and later Boxer design

It took until 1803 for the British artillery to adopt it, albeit with great enthusiasm when it did. Shrapnel was promoted to Major in the same year. Major is a Military rank the use of which varies according to country The Duke of Wellington used it beginning in 1808 against Napoleon, including in the Battle of Waterloo, and wrote admiringly of its effectiveness. Field Marshal Arthur Wellesley 1st Duke of Wellington, KG, KP, GCB, GCH, PC, FRS ( c Napoleon Bonaparte (15 August 1769 – 5 May 1821 was a French military and political leader who had a significant impact on the History of Europe. In the Battle of Waterloo (Sunday 18 June 1815 near Waterloo Belgium

The design was improved by Captain E M Boxer RA in the 1840s and crossed over when cylindrical shells for rifled guns were introduced.

World War I era

Trajectory and pattern of US 3-inch (76 mm) Shrapnel shell of WWI era

US, Russian, German, French & British WWI Shrapnel rounds

The size of shrapnel balls in World War I was based on the premise that a projectile energy of 58 foot-pounds (US)^[1] to 60 foot-pounds (British)^[2] was required to disable an enemy soldier. At the velocity of a typical World War I 3-inch (76 mm) field gun shell after travelling 6,000 yards (5,500 m), plus the additional velocity from the shrapnel bursting charge, this was the minimum energy of a single half-inch lead-antimony ball of approximately 170 grains (11 g), or 41-42 balls = 1 pound. Hence this was a typical field gun shrapnel bullet size. Hence the field gun shrapnel shell performed a role which today is typically performed by a . 50 caliber machine-gun. For larger guns which had lower velocities, correspondingly larger balls were used so that each individual ball was lethal.

During the initial stages of World War I, shrapnel was widely used by all sides to attack troops in the open, though trench warfare reduced its use as high explosive shells became the predominant type of 'explosive' shell used. World War I (abbreviated WWI; also known as the First World War, the Great War, and the War to End All While shrapnel made no impression on trenches and other earthworks it remained the favoured weapon of the British (at least) to support their infantry assaults. It prevented the Germans manning their trench parapets and was less hazardous to the assaulting British infantry than high explosives. Shrapnel being non-cratering was also advantageous in an assault. Shrapnel was also useful against counter-attacks, working parties and any other troops in the open. However, shrapnel was unable to cut the barbed wire entanglements in no man's land, defeat troops under protection, or destroy positions all of which were required in the preliminary bombardment to an attack. Barbed wire, also known as barb wire (and frequently in dialect form spelled bob or bobbed) is a type of fencing Wire constructed No man's land is a term for land that is not occupied or more specifically land that is under dispute between countries or areas that will not occupy it because of fear or uncertainty

With the advent of relatively insensitive high explosives which could be used as the filling for shells, it was found that the casing of a properly designed high explosive shell fragmented effectively. However, this fragmentation was often lost when shells penetrated soft ground and because some fragments went in all directions it was a hazard to assaulting troops. For example, the detonation of an average 105 mm shell produces several thousand high velocity (1,000 to 1,500 m/s) fragments, a lethal (at close range) blast overpressure and, if a surface or sub-surface burst, a useful cratering and anti-material effect — all in a munition much less complex to make than the later versions of the shrapnel shell.

One item of note is the 'Universal Shell', a type of field gun shell developed by Krupp of Germany in the early 1900s. The Krupp family, a prominent 400-year-old German dynasty from Essen, have become famous for their Steel production and for their manufacture of This shell could function as either a shrapnel shell, or high explosive projectile. The shell had a modified fuse and instead of resin as the packing between the shrapnel balls, TNT was used. Trinitrotoluene ( TNT) is a Chemical compound with the formula C6H2(NO23CH3 When the fuse was set to time, the fuse functioned in the normal way, ejecting the balls and igniting (not detonating) the TNT, the TNT giving a visual puff of black smoke. In impact mode the TNT filling was detonated, so becoming an high explosive shell with a very large amount of low velocity fragmentation and a milder blast. Again due to its complexity, it was dropped in favour of the simple high explosive shell.

When World War I began the United States also had what it referred to as the "Ehrhardt High-Explosive Shrapnel" in its inventory. ^[3] It appears to be the same as the German design, with bullets embedded in TNT rather than resin. Douglas Hamilton mentions this shell type in passing, as "not as common as other types" in his comprehensive treatises on manufacturing Shrapnel^[4] and High Explosive shells^[5] of 1915 and 1916, but gives no manufacturing details. Nor does Ethan Viall in 1917^[6]. Hence the US appears to have ceased its manufacture early in the war, presumably based on the experience of other combatants.

World War II era

By World War II shrapnel shells, in the strict sense of the word, fell out of use, the last recorded use of shrapnel being 60 pdr shells fired in Burma in 1943. World War II, or the Second World War, (often abbreviated WWII) was a global military conflict which involved a majority of the world's nations, including A new shrapnel shell, Mk 3D a steamlined shell had been developed for 60 pdr in the early 1930s, it contained 760 bullets of 41/lb size. There was some use of shrapnel by the British in the campaigns in East and North East Africa at the beginning of the war where 18-pdr and 4. 5-inch (110 mm) Howitzers were used. In 1945 the British conducted successful trials with shrapnel shells fuzed with VT. However, shrapnel was not developed for any of the post World War I guns.

Vietnam era

Although not strictly shrapnel, a 1960s weapons project produced splintex shells for 90 and 106 mm RCLs and for 105 mm Howitzer where it was called 'Beehive'. A howitzer is a type of Artillery piece that is characterized by a relatively short barrel and the use of comparatively small explosive charges to propel projectiles Unlike the shrapnel shells’ balls, the splintex shell contained flechettes. The French word fléchette means "little arrow" or Dart projectile of steel that is sharp and pointed with a vaned tail for stable flight The result was the 105 mm M546 APERS-T, first used in the Vietnam War in 1966. The Vietnam War, also known as the Second Indochina War, or the Vietnam Conflict, occurred in Vietnam, Laos and Cambodia The shell consisted of approximately 8,000 half gram flechettes, these arranged in five tiers, a time fuse, body shearing detonators, central flash tube, smokeless propellant charge with a dye marker contained in the base and tracer element. The functioning of the shell was as follows; the time fuse fires, flash sent down the flash tube, shearing detonators fire, and the forward body splits into four pieces, body and first four tiers dispersed by the projectile's spin, last tier and visual marker by the powder charge. The flechettes spread, mainly due to spin, from the point of burst in an ever widening cone along the projectile's previous trajectory prior to burst. The round is a highly effective anti-personnel weapon — soldiers report that after beehive rounds were fired during an over-run attack, many enemy dead had their hands nailed to the wooden stocks of their rifles, and these dead could be dragged to mass graves by the rifle — but complex to make. It is said that the name beehive was given to the munition type due to the noise of the flechettes moving through the air resembling that of a swam of angry bees.

Modern era

Soviet shell of 125 mm for tanks

Though shrapnel rounds are now rarely used, there are other modern rounds, apart from the Beehive shell, that use, or have used the shrapnel principle. The DM 111 20 mm cannon round used for close range air defense, the flechette filled 40 mm HVCC (40 x 53 mm HV grenade), the 35 mm cannon (35 × 228 mm) AHEAD ammunition (152 x 3. 3 g tungsten cylinders), RWM Schweiz 30 × 173 mm Air-Bursting munition, 5-Inch Shotgun Projectile (KE-ET) and possibility many more. Also many modern armies have canister shot ammunition for tank and artillery guns, the XM1028 round for the 120 mm M256 tank gun being one example (approx 1150 tungsten balls at 1400 m/s).

At least some Anti-Ballistic Missiles (ABMs) use shrapnel like warhead instead of the more common blast/fragmentation (blast/frag) type. An anti-ballistic missile (ABM is a Missile designed to counter Ballistic missiles (a missile for Missile defense) As with a blast/frag warhead, the use of this type of warhead does not require a direct body-on-body impact, so greatly reducing tracking and steering accuracy requirements.

At a predetermined distance from the incoming re-entry vehicle (RV) the warhead releases, in the case of the ABM warhead by an explosive expulsion charge, an array of mainly rod-like sub-projectiles into the RV's flight path.

Unlike a blast/frag warhead, the expulsion charge is only needed to release the sub-projectiles from the main warhead, not to accelerate them to high velocity. The velocity required to penetrate the RV's casing comes from the high terminal velocity of the warhead, similar to the shrapnel shell's principle.

The reason for the use of this type of warhead and not a blast/frag is that the fragments produced by a blast/frag warhead cannot guarantee penetration of the RV's casing. By using rod like sub-projectiles, a much greater thickness of material can be penetrated, greatly increasing the potential for disruption of the incoming RV.

Gallery of images

Shrapnel from the First World War. World War I (abbreviated WWI; also known as the First World War, the Great War, and the War to End All

Shrapnel from the Gulf War.

See also

• Warfare: Artillery shell, Armour, Ammunition, Howitzer, Military technology and equipment, Suicide bombing, Pipe bomb, Anti-personnel weapon, Claymore mine, Grenade, Shaped charge, Ammunition column
• Military: British Army, Second Battle of Krithia
• Other : Eponym, List of cemeteries and memorials at Gallipoli
• Engagements: , Battle of Scimitar Hill, Centennial Olympic Park bombing, Timeline of the history of Afghanistan
• People: Henry Shrapnel, Thomas Pakenham, 5th Earl of Longford, Wali Khan Amin Shah
• Douglas T Hamilton, Shrapnel Shell Manufacture. A Comprehensive Treatise. New York: Industrial Press, 1915

Notes and References