Red October 1: Russian infantry (includes regular 628 and Assault Engineer 628)
RO 2: more Russian infantry, SW, concealment; minefields
RO 3: German infantry (with Assault Engineer 838)
RO 4: more German infantry, SW, concealment; commissars; control and perimeter markers
RO 5: Russian guns and armor, AT ditch, fort. buildings, cellars, trenches, German armor
RO 6: lots of markers, including variant "First Fire" with "inherent", "MA", and so on, and Motion Attempt
Red Barricades 1: location/perimeter markers, breach, fort. building, trench
RB 2: infantry, SW, concealment for both sides, minefields
I assume the RB sheets are similar to the previous edition, but cannot confirm. No Assault Engineer symbol on the appropriate squads.