"Shadow War" was the fourth and final DLC map pack released for Call of Duty: WWII . The use of .part13.rar indicates that the original file (likely a digital copy of the game or its expansion) was split into multiple smaller archives to facilitate easier downloading or storage. The "Shadow War" Content
Shadow War marked the conclusion of the game's post-launch content cycle, focusing on the end-of-war clandestine operations and the culmination of the Nazi Zombies narrative. CallOfDutyWW2ShadowWar.part13.rar
: A new objective-based mission called Operation Arcane was added, where players infiltrate a secret Nazi research facility. "Shadow War" was the fourth and final DLC