Kammala jumla mai zuwa: A cikin 1918 Jamhuriyar Jama'ar Ukraine da Hetmanate na Ukraine suka mallaki garin. Daga 1919 Anton Denikin na White Army na Kudancin Rasha ya mallaki garin. A cikin 1920, Ostrogozhsk ya zama wani ɓangare na Soviet Russia, yayin da ba a kammala iyakokin tsakanin Soviet Russia da Soviet Ukraine ba har zuwa 1925. Dangane da ƙidayar jama'a na 1926, 'yan asalin Ukraine sun kai kashi 74.1 na mazaunan garin da kashi 69.6 na mazaunan gundumar. A cikin 1928 Ostrogozhsk ya zama cibiyar gudanarwa ta gundumar a cikin abin da yanzu shine Voronezh Oblast. Garin ya mallaki Nazi Jamus a lokacin Yaƙin Duniya na II daga Yuli 5, 1942 (a lokacin yakin basasa na Nazi).
Yaƙin Voronezh) zuwa 20 ga Janairu, 1943, lokacin da aka 'yantar da shi a yayin Ostrogozhsk<unk>Rossosh Offensive.