'Herbst II' was a German and Croat operation against the partisan forces of Josip Broz Tito in the area of Zupanja, Samac and Vrpolje within German-occupied Yugoslavia (19/21 October 1943).

The objective was the destruction of the 16^th Assault Division in the area between the Sava river and the railway line linking Vinkovci and Zupanja in south-eastern Slavonia.

The German contribution to the operation took the form of elements of Generalleutnant Josef Brauner von Haydringen’s 187^th Reserve-Division, one company of the 6/Polizeiregiment 'Kroatien', 12^th Panzerkompanie zbV with nine tanks, and 6^th and 64^th Panzerzüge, while the Croat contribution was elements of Pukovnik Zvonimir Stimaković's Syrmian Brigade, part of 2/1^st Recruit Regiment, and one Sava river gunboat. The Axis forces failed to make meaningful contact with the partisans and the operation was called off before the end of the third day. The losses on each side were insignificant.