Krzywonoś pronounced [kʂɨˈvɔnɔɕ] is a village in the administrative district of Gmina Szydłowo, within Mława County, Masovian Voivodeship, in east-central Poland.

[1] Following the invasion of Poland by Nazi Germany, in the winter of 1940 on an area of 300 square kilometres (120 sq mi) a vast military training range was built by prisoners of the Soldau concentration camp nearby.

Some fifteen villages around Krzywonoś were completely dismantled to make room for it.

The facility was used by the Nazis for repairing and refitting army tanks in Operation Barbarossa, and for testing anti-tank weapons and artillery.

[3] The Polish settlements destroyed to make room for the new range included Nosarzewo, Dębsk, Nieradowo, Marianowo, Pawłowo, Kluszewo, Garlino, Zalesie, Żarnow, Zawady, Wiksin, Rąbierz, Kołakow, Budy, and Niemyje.