The Hand Grenade Gordon L
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THE HAND GRENADE GORDON L. ROTTMAN © Osprey Publishing • www.ospreypublishing.com THE HAND GRENADE GORDON L. ROTTMAN Series Editor Martin Pegler © Osprey Publishing • www.ospreypublishing.com CONTENTS INTRODUCTION 4 DEVELOPMENT 7 A universal weapon USE 35 Grenades in combat IMPACT 62 Assessing the hand grenade’s influence CONCLUSION 75 GLOSSARY 77 BIBLIOGRAPHY 79 INDEX 80 © Osprey Publishing • www.ospreypublishing.com INTRODUCTION The hand grenade is essentially a technologically enhanced improvement of what was the first multifunctional, direct- and indirect-fire, offensive A German Handgranatetrupp weapon employed in warfare – the rock. The hand grenade is basically a (hand-grenade team) rushes small missile filled with an HE or chemical agent intended for hand across no man’s land with each delivery against enemy personnel or material at short ranges. Over time man carrying a pair of hand- such weapons have been supplemented by special-purpose grenades, grenade bags under his arms, 1917. The rightmost man carries a which dispense irritant gas, incendiary effects, smoke screening, signaling, stick grenade in his hand. They or target marking. The most utilitarian grenades are high-explosive/ are armed with Mauser 7.92mm fragmentation (HE/frag or simply “frags”) – “casualty-producing” Kar 98A carbines rather than the antipersonnel weapons. These are referred to as “defensive” grenades as longer Gew 98 rifles carried by other German infantrymen. (Tom they are intended to be thrown from behind cover. Another casualty- Laemlein/Armor Plate Press) producing grenade is the blast, concussion, or “offensive” grenade. These 4 © Osprey Publishing • www.ospreypublishing.com have bodies made of thin, light materials generating little fragmentation. They may be thrown from short ranges using minimal cover. The terms “offensive” and “defensive” with respect to grenades were coined by the French during World War I and the nomenclature has subsequently been adopted by many countries. As for practical employment, a soldier will use whatever type of grenade is available. Only “defensive” and “offensive” grenades are discussed in detail here, but these weapons’ role in the development of other types of hand grenade – and wider influence on related weapons such as During World War II, Soviet the rifle grenade and the grenade launcher – is also covered. submachine-gunners take up position in a gulley. In the Antipersonnel grenades rely on fragmentation and blast (flash burns, foreground are three RGD-33 stick concussion, over-pressure) to inflict casualties. Fragmentation grenades grenades without the customary have some form of construction that encourages the body to fragment add-on fragmentation sleeves, effectively. The casualty radius can be 5–20m (5.5–22yd), but stray and two RPG-40 AT hand grenades. These relied on blast to fragments can travel over 200m (219yd). Depending on the design and buckle the armor and were not of materials, there could be just a few large fragments or thousands. During the shaped-charge type. (Courtesy detonation the cast-iron body actually swells almost to twice its original of the Central Museum of the size. The explosion essentially pulls apart and shreds rather than shatters Armed Forces, Moscow via Stavka) the grenade. “Controlled fragmentation” grenades were developed in the 1970s, consisting of thousands of steel ball bearings embedded in plastic bodies. The ball bearings, each 2–3mm (0.08–0.12in) in diameter, will travel only a short distance before losing their lethal velocity to reduce the danger to throwers. At close range, though, large numbers of ball bearings will strike targeted troops. Hand grenades are relatively simple weapons. They must be, owing to the necessity of producing them in huge numbers at low cost while conserving essential materials, and the need to make them easy to use in the heat of combat. They are preferred to be lightweight, reliable, effective in their given role, and – foremost – safe for the user. This latter requirement means the user has to have confidence in the grenade’s reliability, the factory’s quality control, and the quality of the primer and delay fuse. Among the commonest of soldiers’ fears regarding grenades are concerns about poor quality control, poor workmanship, or use of inferior materials – resulting in delay fuses burning too fast, or causing the sparking primer to blast sparks that would bypass the delay fuse and ignite the sensitive detonator. There have been many hundreds of grenade models fielded from World War I to the present. Additionally, there are innumerable variants of grenades, not just in functions and effects, but construction means and materials, safety mechanisms, arming methods, identification means, and how they are thrown. There are no unifying similarities between all 5 © Osprey Publishing • www.ospreypublishing.com grenades unless it is the fact that they are hand-thrown. Making assumptions that any two grenades function similarly can be fatal. Grenades require a prescribed manner of delivery to ensure proper employment, maximal effects upon the recipient, and safety of the user. By the nature of their design most hand grenades are readily adaptable as booby traps or early-warning devices. Grenades can be used offensively or defensively. Other than that, there is little in the way of grenade tactics as such. It is a weapon operated by a single combatant, although grenadiers most effectively work in pairs, with the second man providing security. However, during World War I more Vietnam, September 1965: a elaborate grenade tactics evolved employing specially trained and cautious “tunnel rat” of the US equipped teams to attack and defend trenches. Army’s 173rd Airborne Brigade World War I is considered the “golden age” of grenades as there were grips an M26 grenade as he examines a Viet Cong bunker. At so many successful and less-than-successful types fielded in effort to the slightest sound from within he provide the massive numbers demanded. This included “trench-made” or will lob the grenade, often expedient grenades of questionable safety. By the war’s end the modern followed by a second. Smoke and grenade had emerged from hard-learned lessons. Since World War I the tear-gas grenades were also used to flush out the enemy. (Tom grenade has been viewed as the infantryman’s “pocket artillery,” the Laemlein/Armor Plate Press) shortest-ranged weapon in a succession of high-explosive/fragmentation- firing weapons ranging progressively upward to rifle grenades, mortars, howitzers, and guns. During the interwar years some improvements were made on fragmentation grenades and a few new special-purpose types were developed. Impact-detonated fuses were looked at during the 1930s, but these proved dangerous to the user. Generally unsuccessful attempts were made to revive them during World War II and again in the 1960s. By the outbreak of World War II most armies were employing effective grenades and that conflict saw the use of a wide range of grenades, including fragmentation, blast, antitank (AT), incendiary, screening and signaling smoke, various chemical, and others. They were expended in huge numbers in all theaters. For example, the US produced 87,320,000 hand and rifle grenades during World War II. Most countries could not keep pace with the demand. Countries in extremis fielded expedient grenades using substitute materials and inferior components. Hand grenades that could be fired from rifle grenade launchers emerged. Grenades were commonly adapted as booby traps. Since 1945 grenades have been improved in reliability, more powerful explosives, and more effective fragmentation. Regardless of the introduction of high-tech weapons, grenades have remained essential. Development of course continues, but today’s grenades for the most part represent the pinnacle 6 of development in this line of ordnance. © Osprey Publishing • www.ospreypublishing.com DEVELOPMENT A universal weapon ORIGINS First recorded in the 8th century ad, the earliest grenades were Byzantine incendiary weapons, employing the mysterious “Greek Fire,” akin to modern napalm. In the ensuing centuries the technology spread through the Islamic world and into the Far East, with the Chinese refining the weapon to feature a metal casing and a gunpowder filling. By the 16th century the weapon had entered military service throughout Europe, and grenades were cast-iron spheres 4in or larger in diameter with a time fuse fitted – reminiscent of those carried by cartoon spies. Instead of waxed candle wicks, the fuse was now a flaxen cord rolled in dampened By the late 17th century most European armies included assault units of infantrymen specially trained to throw grenades. Dated 1744, these watercolours by Andrew Lens (c.1713–after 1779) depict stages of a British grenadier’s drill movements. Grenadiers were selected from among the largest, strongest, and bravest soldiers to lead assaults and hurl grenades at the enemy’s positions in advance of the main body. The attacking grenadiers carried lit “slow matches” – slowly burning fuses from which to light grenade fuses. (Anne S.K. Brown Military Collection, Brown University Library) 7 © Osprey Publishing • www.ospreypublishing.com An example of the types of gunpowdergunpow and dried. Grenades weighed grenades used from the 1600s all upup tot 2.5lb and sometimes more. This the way to World War I – a cast- wasw to be the standard design for the iron sphere filled with gunpowder and fitted with a thread-wrapped next 300 years. According to Peter cotton wick rolled in dampened Whitehorne, one observer of the gunpowder or sulfur and dried. European military scene in the The term “grenade” is variously 1570s: “These balles, after they are said to be derived from the Latin word for pomegranate, pomum fired andan well kindeled, and having blowen granatum (meaning “apple” and a little, must be quickly throwen, lest they “seeded”), or the Spanish word hurte suchsuc as hurtle them” (quoted in Heinl for the same fruit, granada, owing 2013: 136). 136) to the size and shape of early spherical grenades.