Battle of Neretva is a 1969 Yugoslavian epic partisan film. Written by Stevan Bulajić and Veljko Bulajić, and directed by Veljko Bulajić, it is based on the true events of World War II. The Battle of the Neretva was due to a strategic plan for a combined Axis powers attack in 1943 against the Yugoslav Partisans. The plan was also known as the Fourth Enemy Offensive and occurred in the area of the Neretva river in Bosnia and Herzegovina.

Case White, also known as the Fourth Enemy Offensive, was a combined Axis strategic offensive launched against the Yugoslav Partisans throughout occupied Yugoslavia during World War II. It was one of the most significant confrontations of World War II in Yugoslavia. The offensive took place in early 1943, between 20 January and mid-to-late March. The Axis operation prompted the Partisan Supreme Command to enact its plans to drive toward eastern Herzegovina, Sandžak and Montenegro.