Durchgangsstrasse IV (translated as Thoroughfare IV or Transit Road IV; abbreviated DG IV) was a road constructed by Nazi Germany in occupied Ukraine during World War II. It was a strategic military road to supply the southern sector of the Eastern Front. The large scale constructions works started in early 1942 to support the German advance towards Stalingrad. It ran for over 2,000 kilometres (1,200 mi) from Lviv east to Stalino (now Donetsk). Organisation Todt was responsible for the construction which was sub-contracted to several private construction firms. It was constructed by forced laborers – Soviet prisoners of war, local civilians, and Jews – who were procured by the SS and guarded by the Schutzmannschaft battalions. One of the largest forced labor projects undertaken by Nazi Ger