 This collaboration lasted right up until the Italian capitulation when Chetnik troops switched to supporting the German occupation in trying to force the Partisans out of the coastal cities which the Partisans liberated after the Italian withdrawal.After the Allies did not land in Dalmatia as they had hoped, these Chetnik detachments were basically forced into collaboration with the Germans in order to avoid being caught between the Germans and the Partisans.After the 1941 split between the Partisans and the Chetniks in occupied Serb territory, the Chetnik groups in central, eastern, and northwestern Bosnia, specifically the Dinara Division, found themselves caught between the German and Ustaše (NDH) forces on one side and the Partisans on the other.