SM-70

Last updated
Splittermine Modell 1970
Spring-gun Selbstschussanlage.JPG
Fence-mounted SM-70 at the Observation Post Alpha museum
TypeDirectional anti-personnel mine
Place of originEast Germany
Service history
In service1970–1984
Used by East Germany
Wars Cold War
Production history
No. built60,000
Specifications
Mass191 g
Length350 mm
Diameter150 mm

Effective firing range25 m
Maximum firing range120 m
Filling110 g TNT explosive
~80 steel cube projectiles
Detonation
mechanism
Tripwire initiated
N-172 (pull or tension release)

The SM-70 (Splittermine Modell 1970) is an East German directional fragmentation antipersonnel mine developed specifically to combat Republikflucht (defection) across the Inner German Border (Grenze) into West Germany. [1] [2]

Contents

Design

Erich Lutter, an SS leader who headed Department II D 4 (weapons) in the Reich Security Main Office, developed the concept in 1942 for automatic shooting systems on the fences of concentration camps and ghettos known as Scharfschützenmine (Sniper mine). This was intended to prevent prisoners from escaping with minimal personnel expenditure. Lutter's designs were never realized. [3] According to the journalist Georg Bensch, his plans fell into the hands of the victorious Soviet power after the Second World War. In the GDR, these plans were used to develop their own automatic shooting systems. In 1966, the first devices under East Germany were developed with the help of the military technical institute "VUSTE" in Czechoslovakia between Salzwedel and Arendsee, where the automatic firing systems was tested on pigs that were driven into the relevant areas. First fielded in 1970, the mines were cone-shaped, tripwire activated, and mounted to concrete posts along the line of climb-resistant prefabricated steel mesh fence. In some cases, they were mounted directly to the fence itself. They were aimed parallel with the fence line, and intended to kill or incapacitate anyone attempting to climb or cut through the fence.

Service

A US Army schematic of the SM-70 US Army - Schematic drawing - East German SM-70 antipersonnel mine.jpg
A US Army schematic of the SM-70

Beginning in late 1970, approximately 60,000 SM-70s were installed on 440 kilometers (273 mi) of particularly escape-prone rural sections of the East German border. Installation of the mines cost 100,000 East German marks per kilometer, for a total cost of over 44 million marks. The mines were not used on the Berlin Wall. [1] Initial plans called for the SM-70 to completely replace the buried PMN anti-personnel mines along the border, but initial problems with the electrical firing devices after exposure to the elements actually resulted in more PMN mines being emplaced as a stopgap measure. [2] When fired, the SM-70 produced a cone of fire lethal within 25 meters (82 ft). One East German described finding a deer shredded by an SM-70, noting that a 5 m area "appeared as if it had been worked over by a rake." [2]

Although referred to within the Border Guards by the National People's Army designation G-501, for propaganda purposes the mines were referred to as "Automatic Firing Devices" (German: "Selbstschussanlage") in public documents. The cryptic description led to the public perception that the mine was a type of automated sentry gun (rather than a simple static trip-mine), a misconception shared even with Western intelligence agencies. In fact, no such technology existed during the lifespan of East Germany, and the mine was actually more similar in capability to an oversized spring gun, but the rumors provided an additional psychological deterrent to would-be border crossers. From 1973 onward, the mines were enclosed in a plastic box housing for protection from the elements, further concealing their design from onlookers. [4]

Oversensitivity of the trip wires proved to be a vexing challenge throughout the service life of the SM-70. The wires proved sensitive enough to trigger the mines if a bird rested on the wire, resulting in a large number of accidental detonations in early deployment; this led to an inert "bird wire" being strung slightly above the first actual trip wire to give the birds something to rest on without risking a discharge. This proved only somewhat effective, as the mines still regularly suffered unintentional detonations due to heavy winds, deer and other animals, snow and ice accumulation, falling tree branches, bramble overgrowth, and rock-throwing West Germans. [5]

Michael Gartenschläger

Replica SM-70 at the Grenzhus Schlagsdorf Sm-70 schlagsdorf.jpg
Replica SM-70 at the Grenzhus Schlagsdorf

The true nature and purpose of the SM-70 was eventually determined after Hamburg resident and former East German political prisoner Michael Gartenschläger — who had led a party of six defectors in a successful escape across the border in 1971—successfully infiltrated the border defenses near Büchen on 30 March 1976, dismantled a live SM-70 from its mount, and returned safely to present the mine to West German authorities for inspection. Against official advice, Gartenschläger made a second successful trip to the same section of fence on 23 April and retrieved another live SM-70. The event made West German newspapers, and tipped off the border guards that the sector was being targeted for sabotage. A special 29-member task force was assembled to prepare concealed firing positions in the area and set up an ambush for the culprit. On 1 May 1976, as Gartenschläger was climbing over the East German fence for his third attempt, he was captured in the beam of a searchlight and blown off his ladder by a burst of automatic gunfire. There was no request for surrender. [6]

In 2005 the border guard who shot him was acquitted of all charges in a German court. [7]

Following the recovery and analysis of the intact SM-70 in 1976, international public outcry led to diplomatic protests with the East German government. When the hard-currency starved GDR approached the West for a loosening of relations in exchange for trade, the sole sticking point in the West German platform was the removal of the SM-70. This suited the GDR as well, since Erich Honecker saw the SM-70 as troublesome, expensive and bad for the GDR's image, and intended to remove them shortly anyway (along with the rest of the buried mines) when he implemented his plan for a fully "electronic" border defense grid (Grenze 2000). Honecker's plan eventually fell through due to lack of funding, but the SM-70 continued to be removed as per the agreement, being replaced with extra buried PMN mines, which remained in place until the fall of East Germany in 1990.

See also

Related Research Articles

<span class="mw-page-title-main">Erich Honecker</span> Leader of East Germany from 1971 to 1989

Erich Ernst Paul Honecker was a German communist politician who led the German Democratic Republic from 1971 until shortly before the fall of the Berlin Wall in November 1989. He held the posts of General Secretary of the Socialist Unity Party of Germany (SED) and Chairman of the National Defence Council; in 1976, he replaced Willi Stoph as Chairman of the State Council, the official head of state. As the leader of East Germany, Honecker was viewed as a dictator. During his leadership, the country had close ties to the Soviet Union, which maintained a large army in the country.

<span class="mw-page-title-main">Altmarkkreis Salzwedel</span> District in Saxony-Anhalt, Germany

Altmarkkreis Salzwedel is a district in Saxony-Anhalt, Germany. It is bounded by the districts Gifhorn, Uelzen, Lüchow-Dannenberg in Lower Saxony, and the districts of Stendal and Börde (district).

<span class="mw-page-title-main">Altmark</span> Historic region in Saxony-Anhalt, Germany

The Altmark is a historic region in Germany, comprising the northern third of Saxony-Anhalt. As the initial territory of the March of Brandenburg, it is sometimes referred to as the "Cradle of Prussia", as by Otto von Bismarck, a native of Schönhausen near Stendal.

<span class="mw-page-title-main">Erich Mielke</span> East German secret police chief (1907–2000)

Erich Fritz Emil Mielke was a German communist official who served as head of the East German Ministry for State Security, better known as the Stasi, from 1957 until shortly after the fall of the Berlin Wall in 1989. Dubbed "The Master of Fear" by the West German press, Mielke was one of the most powerful and most hated men in East Germany.

<span class="mw-page-title-main">Günter Schabowski</span> German politician

Günter Schabowski was an East German politician who served as an official of the Socialist Unity Party of Germany, the ruling party during most of the existence of the German Democratic Republic (GDR). Schabowski gained worldwide fame in November 1989 when he improvised a slightly mistaken answer to a press conference question about the future of the Berlin Wall. That raised popular expectations much more rapidly than the government planned and so massive crowds gathered the same night at the Wall, which forced its opening after 28 years. Soon afterward, the entire inner German border was opened.

<span class="mw-page-title-main">Palace of the Republic, Berlin</span> Former seat of GDR parliament and cultural center

The Palace of the Republic was a building in Berlin that hosted the Volkskammer, the parliament of East Germany, from 1976 to 1990.

<span class="mw-page-title-main">Peaceful Revolution</span> 1989–1990 process disestablishing East Germany

The Peaceful Revolution – also, in German called Die Wende – was one of the peaceful revolutions of 1989 at the peak of the collapse of the Eastern Bloc in the late 1980s. A process of sociopolitical change that led to, among other openings, the opening of their borders to the Western world.

<span class="mw-page-title-main">Inner German border</span> Border which separated East Germany and West Germany

The inner German border was the frontier between the German Democratic Republic and the Federal Republic of Germany from 1949 to 1990. De jure not including the similar but physically separate Berlin Wall, the border was 1,381 kilometres (858 mi) long and ran from the Baltic Sea to Czechoslovakia.

East German jokes, jibes popular in the former German Democratic Republic, reflected the concerns of East German citizens and residents between 1949 and 1990. Jokes frequently targeted political figures, such as Socialist Party General Secretary Erich Honecker or State Security Minister Erich Mielke, who headed the Stasi secret police. Elements of daily life, such as economic scarcity, relations between the GDR and the Soviet Union, or Cold War rival, the United States, were also common. There were also ethnic jokes, highlighting differences of language or culture between Saxony and Central Germany.

<span class="mw-page-title-main">Margot Honecker</span> East German politician (1927–2016)

Margot Honecker was an East German politician and influential member of the country's Communist government until 1989. From 1963 until 1989, she was Minister of National Education of the German Democratic Republic (GDR). She was married to Erich Honecker, leader of East Germany's ruling Socialist Unity Party from 1971 to 1989 and concurrently from 1976 to 1989 the country's head of state.

<span class="mw-page-title-main">Pan-European Picnic</span> 1989 peace demonstration held on the Austrian-Hungarian border near Sopron, Hungary

The Pan-European Picnic was a peace demonstration held on the Austrian-Hungarian border near Sopron, Hungary on 19 August 1989. The opening of the border gate between Austria and Hungary at the Pan-European Picnic was an event in the chain reaction, at the end of which Germany reunified, the Iron Curtain fell apart, and the Eastern Bloc disintegrated. The communist governments and the Warsaw Pact subsequently dissolved, ending the Cold War.

<span class="mw-page-title-main">National Defence Council (East Germany)</span> East German government body responsible for military and national defense affairs

The National Defense Council of the German Democratic Republic was created in 1960 as the supreme state body of the German Democratic Republic in charge of national defense matters, including mobilization planning. The NVR held the supreme command of the GDR's armed forces, and the NVR's chairman was considered the GDR's commander-in-chief.

<span class="mw-page-title-main">Iron Curtain</span> Political boundary dividing Europe during the Cold War

During the Cold War, the Iron Curtain was a political metaphor used to describe the political and later physical boundary dividing Europe into two separate areas from the end of World War II in 1945 until the end of the Cold War in 1991. The term symbolizes the efforts by the Soviet Union (USSR) to block itself and its satellite states from open contact with the West, its allies and neutral states. On the east side of the Iron Curtain were the countries that were connected to or influenced by the Soviet Union, while on the west side were the countries that were NATO members, or connected to or influenced by the United States; or nominally neutral. Separate international economic and military alliances were developed on each side of the Iron Curtain. It later became a term for the 7,000-kilometre-long (4,300 mi) physical barrier of fences, walls, minefields, and watchtowers that divided the "east" and "west". The Berlin Wall was also part of this physical barrier.

<span class="mw-page-title-main">Fortifications of the inner German border</span> East Germanys barriers to prevent its citizens from entering West Germany

The inner German border was a complex system of interlocking fortifications and security zones 1,381 kilometres (858 mi) long and several kilometres deep, running from the Baltic Sea to Czechoslovakia. The outer fences and walls were the most familiar and visible aspect of the system for Western visitors to the border zone, but they were merely the final obstacle for a would-be escapee from East Germany. The complexity of the border system increased steadily until it reached its full extent in the early 1980s. The following description and the accompanying diagram describe the border as it was around 1980.

There were numerous escape attempts and victims of the inner German border during its 45 years of existence from 1945 to 1990.

<span class="mw-page-title-main">Fall of the inner German border</span> November 1989 event in Europe

Fall of inner German border, also known as Opening of inner German border, rapidly and unexpectedly occurred in November 1989, along with the fall of the Berlin Wall. The event paved the way for the ultimate reunification of Germany just short of a year later.

<span class="mw-page-title-main">East Germany–Soviet Union relations</span> Bilateral relations

Throughout their existence East Germany and the Soviet Union maintained close diplomatic relations. The Soviet Union was the chief economic and political sponsor of East Germany.

<span class="mw-page-title-main">Fall of the Berlin Wall</span> Historical event involving the destruction of the Berlin Wall

The fall of the Berlin Wall on 9 November 1989, during the Peaceful Revolution, marked the beginning of the destruction of the Berlin Wall and the figurative Iron Curtain, as East Berlin transit restrictions were overwhelmed and discarded. Sections of the wall were breached, and planned deconstruction began the following June. It was one of the series of events that started the fall of communism in Central and Eastern Europe. The fall of the inner German border took place shortly afterward. An end to the Cold War was declared at the Malta Summit in early December, and German reunification took place in October the following year.

<span class="mw-page-title-main">Erich Honecker's 1987 visit to West Germany</span> Visit of Erich Honecker to West Germany

The visit of Erich Honecker to West Germany took place between 7–11 September 1987 in his official capacity as General Secretary of the Socialist Unity Party of Germany (SED) and Chairman of the State Council of the German Democratic Republic. It was the first and only visit of this kind undertaken during the partition of Germany. The five-day event was rated as an important step in the development of cross-German relations as well as Ostpolitik, which was implemented beginning with Willy Brandt, Chancellor of West Germany from 1969 to 1974.

<span class="mw-page-title-main">Gera Demands</span> 1980 East German policy

The Gera Demands were a set of demands made by the East German leader Erich Honecker on 13 October 1980. Directed at the West German government, they called for far-reaching foreign policy concessions.

References

  1. 1 2 Honecker, Erich (6 May 1974). "Protokoll der 45. Sitzung des Nationalen Verteidungsrates der DDR am 03.05.1974" [Minutes of the 45th session of the National Defence Council of the GDR on 3 May 1974](PDF). Chronik der Mauer (in German). Zentrum für Zeithistorische Forschung e.V., Bundeszentrale für politische Bildung, Deutschlandradio . Retrieved 28 June 2009.
  2. 1 2 3 Stacy, William E (1984). "Chapter Six Modern Border Operations: 1970–1983". US Army border operations in Germany, 1945-1983. Heidelberg: Headquarters, US Army, Europe and 7th Army, Military History Office. OCLC   53275935. GSM 5-1-84. Archived from the original on 8 June 2010. Retrieved 28 June 2009.
  3. https://www-az--online-de.translate.goog/altmark/salzwedel/altmark-getestet-1547574.html?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-US&_x_tr_pto=wapp
  4. "SM-70 (Germany), Mines less widely used". Jane's Mines and Mine Clearance. Jane's Information Group. 25 June 2008. Retrieved 28 June 2009.
  5. Rost, Rolf. "Sicherungsanlagen und Aufbau der innerdeutschen Grenze" [Security installations and structure of the inner-German border] (in German). Archived from the original on 24 May 2009. Retrieved 27 June 2009.
  6. Bailey, Anthony (1983). Along the edge of the forest : an Iron Curtain journey. New York: Random House. p. 46. ISBN   978-0-394-52395-8. OCLC   9586661. Reprinted in Witzel, Eron (2004). Disturbed ground : journeys along the remnants of the Iron Curtain (PDF). pp. 124–126. OCLC   84666254 . Retrieved 21 May 2009.
  7. "Last Berlin Wall Shooting Case Closes". Deutsche Welle . 17 February 2005.