instance_of 21 cm nebelwerfer 42
The 21 cm Nebelwerfer 42 ( 21 cm NbW 42 ) was a German multiple ___MASK25___ used in the Second World War . It served with units of the Nebeltruppen , the German equivalent of the American Chemical Corps . Just as the Chemical Corps had responsibility for poison gas and smoke weapons that were used instead to deliver high - explosives during the war so did the Nebeltruppen . The name `` Nebelwerfer '' is best translated as `` smoke - thrower '' . It saw service from 1942 -- 45 in all theaters except Norway . It was adapted for aerial combat by the Luftwaffe in 1943 . The Luftwaffe was the aerial warfare ___MASK67___ of the combined German Wehrmacht ___MASK12___ forces during ___MASK18___ II . Germany ' s ___MASK12___ air arms during the First ___MASK18___ , the " Luftstreitkräfte " of the Army and the " Marine - Fliegerabteilung " of the Navy , had been disbanded in ___MASK13___ 1920 as a result of the terms of the Treaty of Versailles which stated that Germany was forbidden to have any air force . The Wehrmacht ( lit . " defence ___MASK19___ ") was the unified ___MASK65___ of Nazi Germany from 1935 to 1946 . It consisted of the " Heer " ( army ), the " Kriegsmarine " ( navy ) and the " Luftwaffe " ( ___MASK73___ ). The designation " Wehrmacht " for Nazi Germany ' s ___MASK12___ replaced the previously used term , " Reichswehr " ( 1919  35 ), and was the manifestation of Nazi Germany ' s efforts to rearm the nation to a greater extent than the Treaty of Versailles permitted . A multiple ___MASK25___ ( MRL ) or multiple launch rocket system ( MLRS ) is a type of ___MASK74___ system . Rockets have different capabilities than artillery , like longer range , and different payloads , typically considerably larger warheads than a similarly sized artillery platform , or multiple warheads . Unguided ___MASK74___ is notoriously inaccurate and slow to reload , compared to artillery . To overcome this , rockets are combined in systems that can launch multiple rockets simultaneously . Modern rockets can use GPS or inertial guidance , to combine the advantages of rockets with high accuracy . ___MASK74___ is a type of artillery equipped with rocket launchers instead of conventional guns or mortars . The ___MASK64___ of Versailles was the most important of the peace treaties that brought ___MASK18___ I to an end . The ___MASK64___ ended the state of war between Germany and the Allied Powers . It was signed on 28 ___MASK46___ 1919 , exactly five years after the assassination of Archduke Franz Ferdinand . The other Central Powers on the German side of ___MASK18___ I signed separate treaties . Although the armistice , signed on 11 November 1918 , ended the actual fighting , it took six months of Allied negotiations at the Paris Peace Conference to conclude the peace treaty . The treaty was registered by the Secretariat of the League of Nations on 21 October 1919 . The Deutsche Luftstreitkräfte ( German ___MASK73___ ) known before October 1916 as the Fliegertruppen des deutschen Kaiserreiches (" Imperial German Flying Corps ") or simply Die Fliegertruppe  was the ___MASK18___ I ( 1914  18 ) air arm of the German Army , of which it remained an integral part . In English - language sources it is usually referred to as the Imperial German Air Service , although that is not a literal translation of either name . German naval aviators serving with the " Marine - Fliegerabteilung " remained an integral part of the Imperial German Navy "( Kaiserliche Marine )". Both military branches , the army and navy , operated conventional aircraft , observation balloons and Zeppelins . ___MASK18___ II ( often abbreviated to WWII or WW2 ), also known as the Second ___MASK18___ , was a global war that lasted from 1939 to 1945 , although related conflicts began earlier . It involved the vast majority of the world ' s nations  including all of the great powers  eventually forming two opposing military alliances : the Allies and the Axis . It was the most widespread war in ___MASK93___ , and directly involved more than 100 million people from over 30 countries . In a state of " total war ", the major participants threw their entire economic , industrial , and scientific capabilities behind the war effort , erasing the distinction between civilian and military resources . Marked by ___MASK30___ deaths of civilians , including the Holocaust ( in which approximately 11 million people were killed ) and the strategic bombing of industrial and population centres ( in which approximately one million were killed , and which included the atomic bombings of Hiroshima and Nagasaki ), it resulted in an estimated 50 million to 85 million fatalities . These made ___MASK18___ II the deadliest conflict in human ___MASK93___ . ___MASK18___ I ( WWI or WW1 ), also known as the First ___MASK18___ , or the Great War , was a global war originating in Europe that lasted from 28 July 1914 to 11 November ___MASK98___ . More than 70 million military personnel , including 60 million Europeans , were mobilised in one of the largest wars in ___MASK93___ . Over nine million combatants and seven million civilians died as a ___MASK66___ of the war ( including the victims of a number of genocides ), a casualty rate exacerbated by the belligerents ' technological and industrial sophistication , and the tactical stalemate caused by gruelling trench warfare . It was one of the deadliest conflicts in ___MASK93___ , and paved the way for major political changes , including revolutions in many of the nations involved .