From Wikipedia, so take it with a grain of salt.
The term Hiwi ([ˈhiːviː]) is a German abbreviation of the word Hilfswilliger, meaning “voluntary assistant”, or more literally, “willing helper”. During World War II, the term Hiwis gained broad popularity in reference to auxiliary forces recruited from the indigenous populations in the areas of Eastern Europe first occupied and annexed by the Soviet Union and then occupied by Germany. Hitler reluctantly agreed to allow recruitment of Soviet citizens in the Rear Areas during Operation Barbarossa. In a short period of time, many of them were moved to combat units. In late 1942, Hiwis comprised 50 percent of the 2nd Panzer Army‘s 134 Infantry Division, while the 6th Army at the Battle of Stalingrad was composed of 25 percent Hiwis. By 1944, their numbers had grown to 600,000. Both men and women of the Soviet Union were recruited. Veteran Hiwis were practically indistinguishable from the regular German troops, and often served in entire company strengths.
Between September 1941 and July 1944 the SS employed thousands of collaborationist auxiliary police recruited as Hiwis directly from the Soviet POW camps. After training, they were deployed for service with Germany in the General Government and the occupied East.
In one instance, the German SS and police inducted, processed, and trained 5,082 Hiwi guards before the end of 1944 at the SS training camp division of the Trawniki concentration camp set up in the village of Trawniki southeast of Lublin. They were known as the “Trawniki men” (German: Trawnikimänner) and were former Soviet citizen, mostly Ukrainians. Trawnikis were sent to all major killing sites of the “Final Solution“, which was their primary purpose of training. They took an active role in the executions of Jews at Bełżec, Sobibór, Treblinka II, Warsaw (three times), Częstochowa, Lublin, Lvov, Radom, Kraków, Białystok (twice), Majdanek as well as Auschwitz, and Trawniki itself.
The term ‘Hiwis’ acquired a thoroughly negative meaning during World War II when it entered into several other languages in reference to Ostlegionen as well as volunteers enlisted from occupied territories for service in a number of roles including hands-on shooting actions and guard duties at Extermination camps on top of regular military service, drivers, cooks, hospital attendants, ammunition carriers, messengers, sappers, etc.
In the context of World War II the term has clear connotations of collaborationism, and in the case of the occupied Soviet territories also of anti-Bolshevism (widely presented as such by the Germans).
German historian Werner Röhr wrote that there were many different reasons why Soviet citizens volunteered. He argues that the issue has to be seen first and foremost with the German Vernichtungskrieg (war of annihilation) policy in mind. For example, volunteering allowed Soviet POWs to get out of the barbaric German POW camp system, giving them a much higher chance of survival. During World War II, Germany engaged in a policy of deliberate maltreatment of Soviet POWs, in contrast to their treatment of British and American POWs. This resulted in some 3.3 to 3.5 million deaths, or 57% of all Soviet POWs. Therefore it becomes very difficult to differentiate between a genuine desire to volunteer, and seeming to volunteer in the hope of a better chance of surviving the war.
Russians in the German Army can be divided into three categories. Firstly, soldiers mobilized by German troops, so-called Cossack sections, which are attached to German divisions. Secondly, Hilfswillige [Voluntary Assistants] made up of local people or Russian prisoners who volunteer, or those Red Army soldiers who desert to join the Germans. This category wears full German uniform, with their own ranks and badges. They eat like German soldiers and they are attached to German regiments. Thirdly, there are Russian prisoners who do the dirty jobs, kitchens, stables and so on. These three categories are treated in different ways, with the best treatment naturally reserved for the volunteers.
After the war, thousands attempted to return to their homes in the USSR. Hundreds were captured and prosecuted, charged with treason and therefore guilty of enlistment from the start of judicial proceedings. Most were sentenced to the Gulags, and released under the Khrushchev amnesty of 1955.
The reliance upon Hiwis exposed a gap between National Socialist German Workers’ Party ideologues and pragmatic German Army commanders. National Socialist German Workers’ Party leaders including Adolf Hitler regarded all Slavs as Untermenschen and therefore of limited value as volunteers also. On the other hand, the manpower was needed, and German Intelligence had recognised the need to divide the Soviet nationals. The contradiction was sometimes disguised by reclassification of Slavs as Cossacks. Colonel Helmuth Groscurth (Chief of Staff, XI Corps) wrote to General Beck: “It is disturbing that we are forced to strengthen our fighting troops with Russian prisoners of war, who are already being turned into gunners. It’s an odd state of affairs that the “Beasts” we have been fighting against are now living with us in closest harmony.”
The Hiwis may have constituted one quarter of 6th Army‘s front-line strength, amounting to over 50,000 Slavic auxiliaries serving with the German troops.
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