Riverbank defense: defense battles on the eastern front 1943. Riverline Defense: Dug-in trench positions and defensive emplacements covering a destroyed river bridge. Heavy Support & Mortars: Active firing positions of 81 mm mortars (GrW 34) and MG34 heavy machine gun positions. Direct Fire Artillery: 8.8 cm Flak dual-purpose guns engaging enemy strongpoints across the river. Counter-Battery Impacts: Artillery shells impacting enemy-held rubble and ruined structures on the opposing riverbank.