The 'Wiesel-Riegel' was a German blocking position on the arc between Ingulets Konstantinovka and Sidiminukha as part of the disengagement of Generaloberst Karl-Adolf Hollidt’s 6^th Army of Generaloberst Josef Harpe’s Heeresgruppe 'A' on the southern sector of the Eastern Front (mid-March 1944).

It was through this area that General Rodion Ya. Malinovsky’s 3^rd Ukrainian Front and General Fyedor I. Tolbukhin’s 4^th Ukrainian Front were preparing to advance as they cleared south-western Ukraine in the 'Lower Dniepr Offensive Operation' and developed plans for their 'Dniepr-Carpathian Offensive Operation' onslaught into north-eastern Romania.