Name	Katyusha
Origin
Type	Rocket artillery
Service	1939–present
Used by	Soviet Union, Russian Federation, and others
Wars	World War IIKorean WarVietnam WarIran-Iraq war2006 Lebanon War2011 Libyan civil war
Variants	BM-13, BM-8, BM-31, BM-14, BM-21, BM-24, BM-25, BM-27, BM-30 }}

Katyusha multiple rocket launchers () are a type of rocket artillery first built and fielded by the Soviet Union in World War II. Compared to other artillery, these multiple rocket launchers deliver a devastating amount of explosives to an area target quickly, but with lower accuracy and requiring a longer time to reload. They are fragile compared to artillery guns, but inexpensive and easy to produce. Katyushas of World War II, the first self-propelled artillery mass-produced by the Soviet Union, were usually mounted on trucks. This mobility gave Katyushas (and other self-propelled artillery) another advantage: being able to deliver a large blow all at once, and then move before being located and attacked with counter-battery fire.

Katyusha weapons of World War II included the BM-13 launcher, light BM-8, and heavy BM-31. Today, the nickname is also applied to newer truck-mounted Soviet (and not only Soviet) multiple rocket launchers—notably the common BM-21—and derivatives.

The nickname

Initially, the secrecy kept their military designation from being known by the soldiers who operated them. They were called by code names such as Kostikov Guns (after the head of the RNII), and finally classed as Guards Mortars. The name BM-13 was only allowed into secret documents in 1942, and remained classified until after the war.

Because they were marked with the letter K, for Voronezh Komintern Factory, Red Army troops adopted a nickname from Mikhail Isakovsky's popular wartime song, "Katyusha", about a girl longing for her absent beloved, who is away performing military service. Katyusha is the Russian equivalent of Katie, an endearing diminutive form of the name Katherine: Yekaterina →Katya →Katyusha.

German troops coined the sobriquet Stalin's organ (), after Soviet leader Joseph Stalin for its visual resemblance to a church musical organ and alluding to the sound of the weapon's rockets. They are known by the same name in Denmark, Finland (), France (), Norway, the Netherlands (), and in Sweden.

The heavy BM-31 launcher was also referred to as Andryusha (Андрюша, “Andrew”, endearing diminutive). But in fact, so they were called only in the Soviet press. In fact, BM-31 was nicknamed Luca.

World War II

Katyusha rocket launchers were mounted on many platforms during World War II, including on trucks, artillery tractors, tanks, and armoured trains, as well as on naval and riverine vessels as assault support weapons, Soviet engineers also mounted single Katyusha rockets on lengths of railway track to serve in urban combat.

The design was relatively simple, consisting of racks of parallel rails on which rockets were mounted, with a folding frame to raise the rails to launch position. Each truck had between 14 and 48 launchers. The M-13 rocket of the BM-13 system was long, in diameter and weighed .

The weapon is less accurate than conventional artillery guns, but is extremely effective in saturation bombardment, and was particularly feared by German soldiers. A battery of four BM-13 launchers could fire a salvo in 7–10 seconds that delivered 4.35 tons of high explosives over a four-hectare (10 acre) impact zone. With an efficient crew, the launchers could redeploy to a new location immediately after firing, denying the enemy the opportunity for counterbattery fire. Katyusha batteries were often massed in very large numbers to create a shock effect on enemy forces. The weapon's disadvantage was the long time it took to reload a launcher, in contrast to conventional guns which could sustain a continuous low rate of fire.

The sound of the rocket launching also was unique in that the constant "woosh" sound that came from the firing of the rockets could be used for psychological warfare. The rocket's devastating destruction also helped to lower the morale of the German army.

Development

In June 1938, the Soviet Jet Propulsion Research Institute (RNII) in Leningrad was authorized by the Main Artillery Directorate (GAU) to develop a multiple rocket launcher for the RS-132 aircraft rocket (RS for , 'rocket-powered shell'). I. Gvay led a design team in Chelyabinsk, Russia, which built several prototype launchers firing the modified 132mm M-132 rockets over the sides of ZiS-5 trucks. These proved unstable, and V.N. Galkovskiy proposed mounting the launch rails longitudinally. In August 1939, the result was the BM-13 (BM stands for Boyevaya Mashina, 'combat vehicle' for M-13 rockets).

The first large-scale testing of the rocket launchers took place at the end of 1938, when 233 rounds of various types were used. A salvo of rockets could completely straddle a target at a range of 5,500 metres (3.4 mi). But the artillery branch was not fond of the Katyusha, because it took up to 50 minutes to load and fire 24 rounds, while a conventional howitzer could fire 95 to 150 rounds in the same time. Testing with various rockets was conducted through 1940, and the BM-13-16 with launch rails for sixteen rockets was authorized for production. Only forty launchers were built before Germany invaded the Soviet Union in June 1941.

After their success in the first month of the war, mass production was ordered and the development of other models proceeded. The Katyushas were inexpensive and could be manufactured in light industrial installations which did not have the heavy equipment to build conventional artillery gun barrels. By the end of 1942, 3,237 Katyusha launchers of all types had been built, and by the end of the war total production reached about 10,000.

The truck-mounted Katyushas were installed on ZiS-6 6×4 trucks, as well as the two-axle ZiS-5 and ZiS-5V. In 1941, a small number of BM-13 launchers were mounted on STZ-5 artillery tractors. A few were also tried on KV tank chassis as the KV-1K, but this was a needless waste of heavy armour. Starting in 1942, they were also mounted on various British, Canadian and U.S. Lend-Lease trucks, in which case they were sometimes referred to as BM-13S. The cross-country performance of the Studebaker US6 2½ ton truck was so good that it became the GAU's standard mounting in 1943, designated BM-13N (Normalizovanniy, 'standardized'), and more than 1,800 of this model were manufactured by the end of World War II. After World War II, BM-13s were based on Soviet-built ZiL-151 trucks.

The 82mm BM-8 was approved in August 1941, and deployed as the BM-8-36 on truck beds and BM-8-24 on T-40 and T-60 light tank chassis. Later these were also installed on GAZ-67 jeeps as the BM-8-8, and on the larger Studebaker trucks as the BM-8-48. In 1942, the team of scientists Leonid Shvarts, Moisei Komissarchik and engineer Yakov Shor received the Stalin prize for the development of the BM-8-48.

Based on the M-13, the M-30 rocket was developed in 1942. Its bulbous warhead required it to be fired from a grounded frame, called the M-30 (single frame, four round; later double frame, 8 round), instead of a launch rail mounted on a truck. In 1944 it became the basis for the BM-31-12 truck-mounted launcher.

Variants

A list of some implementations of the Katyusha follows:

Caliber (mm)	Tubes	Weapon name	Chassis
82 mm	8	BM-8-8	Willys MB Jeep
82 mm	24	BM-8-24	T-40 light tank, T-60 light tank
82 mm	48	BM-8-48	ZiS-6 truck, Studebaker US6 U3 truck
132 mm	16	BM-13-16
300 mm	12	BM-31-12	Studebaker US6 U3 truck

Combat history

The multiple rocket launchers were top secret in the beginning of World War II. A special unit of the NKVD secret police was raised to operate them. On July 14, 1941, an experimental artillery battery of seven launchers was first used in battle at Orsha in Belarus, under the command of Captain Ivan Flyorov, destroying a station with several supply trains, and causing massive German Army casualties. Following the success, the Red Army organized new Guards Mortar batteries for the support of infantry divisions. A battery's complement was standardized at four launchers. They remained under NKVD control until German Nebelwerfer rocket launchers became common later in the war.

On August 8, 1941, Stalin ordered the formation of eight Special Guards Mortar regiments under the direct control of the General Headquarters Reserve (Stavka-VGK). Each regiment comprised three battalions of three batteries, totalling 36 BM-13 or BM-8 launchers. Independent Guards Mortar battalions were also formed, comprising 36 launchers in three batteries of twelve. By the end of 1941, there were eight regiments, 35 independent battalions, and two independent batteries in service, fielding a total of 554 launchers.

In June 1942 Heavy Guards Mortar battalions were formed around the new M-30 static rocket launch frames, consisting of 96 launchers in three batteries. In July, a battalion of BM-13s was added to the establishment of a tank corps. In 1944, the BM-31 was used in Motorized Heavy Guards Mortar battalions of 48 launchers. In 1943, Guards Mortar brigades, and later divisions, were formed equipped with static launchers.

By the end of 1942, 57 regiments were in service—together with the smaller independent battalions, this was the equivalent of 216 batteries: 21% BM-8 light launchers, 56% BM-13, and 23% M-30 heavy launchers. By the end of the war, the equivalent of 518 batteries were in service.

Post-war development

The success and economy of multiple rocket launchers (MRL) have led them to continue to be developed. During the Cold War, the Soviet Union fielded several models of Katyusha-like MRL, notably the BM-21 launchers somewhat inspired by the earlier weapon, and the larger BM-27. Advances in artillery munitions have been applied to some Katyusha-type multiple launch rocket systems, including bomblet submunitions, remotely-deployed land mines, and chemical warheads.

With the breakup of the Soviet Union, Russia inherited most of its military arsenal including its large complement of MRLs. In recent history, they have been used by Russian forces during the First and Second Chechen Wars and by Armenian and Azerbaijani forces during the Nagorno-Karabakh War. Georgian government forces are reported to indiscriminately have used BM-21 or similar rocket artillery in fighting in the 2008 South Ossetia war.

Katyusha-like launchers were exported to Afghanistan, Angola, Czechoslovakia, Egypt, East Germany, Hungary, Iran, Iraq, North Korea, Poland, Syria, and Vietnam. They were also built in Czechoslovakia, the People's Republic of China, North Korea, and Iran.

Proper Katyushas (Bm-13s) also saw action in the Korean War, used by the Chinese People's Volunteer Army against the South and United Nations forces. Soviet BM-13s were known to have been imported to China before the Sino-Soviet split and were operational in the People's Liberation Army.

Israel captured BM-24 MRLs during the Six-Day War (1967), used them in two battalions during the Yom Kippur War (1973) and the 1982 Lebanon War, and later developed the MAR-240 launcher for the same rockets, based on a Sherman tank chassis. During the 2006 Lebanon War, Hezbollah fired between 3,970 and 4,228 rockets, from light truck-mounts and single-rail man-portable launchers. About 95% of these were 122 mm (4.8 in) Syrian-manufactured Bm-21 artillery rockets, which carried warheads up to 30 kg (66 lb) and had a range of up to 30 km (19 mi). Hamas has launched 122-mm “Grad-type Katyusha” rockets from the Gaza Strip against several cities in Israel, although they are not reported to have truck-mounted launchers.

Katyusha-like MRLs were also allegedly used by the Rwandan Patriotic Front during its 1990 invasion of Rwanda, through the 1994 genocide. They were effective in battle, but translated into much anti-Tutsi sentiment in the local media.

It was reported that BM-21 launchers were used against American forces during 2003 invasion of Iraq. They have also been used in the Afghanistan and Iraq insurgencies. In Iraq, according to Associated Press and Agence France-Presse reports, Katyusha-like rockets were fired at the Green Zone late March 2008.

Katyusha rockets have reportedly been used by both Gaddafi Loyalists and anti-Gaddafi forces during the 2011 Libyan uprising.

See also

Hwacha, Korean gunpowder-based flaming arrow launcher from the 1500s

Congreve rocket, British military weapon designed by Sir William Congreve in 1804

Panzerwerfer, German rocket launcher mounted on a half-track

Wurfrahmen 40, another German rocket launcher mounted on a half-track

Land Mattress, employed by Allied forces in World War II

T34 Calliope, rocket launcher mounted on M-4 Sherman tank chassis

List of rocket artillery

Notes

References

External links

BM-13 (Studebaker) walk-around photos

Photos of various mounts of "Katyushas"

"Creation and Development of Rocket Artillery in the First Phase of the War", translation of a 1976 article published by the USSR Defence Ministry (broken link, see archive)

Photo of a Cuban BM-21 in Angola

Category:Korean War artillery Category:Russian loanwords Category:Salvo weapons Category:Self-propelled artillery of the Soviet Union Category:Self-propelled artillery of World War II Category:Vietnam War artillery Category:Wheeled self-propelled rocket launchers Category:World War II weapons of the Soviet Union

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