Factual error: The boys go deer hunting somewhere in the Appalachians, but the geology is all wrong. That scene is in North Cascades National Park in Washington State. In addition, the "deer" they are hunting is a Red Stag. Not typically found in the Appalachians.
Suggested correction: Part of the scenery is the North Cascades, including the first mountain shot, Mount Baker, south of the Canadian border.
Someone notes that "Red Stags are not typically found in the Appalachians." In reality, there are no wild red stags in the Eastern US, or anywhere in the US, or in North America, or even in the Western Hemisphere. Red stags are native to most of Europe, the Caucasus Mountains region, Anatolia, Iran, and parts of Western Asia. It also inhabits the Atlas Mountains of Northern Africa.
Thank you! Growing up in Pennsylvania and hunting deer since the age of ten - The use of the Red Stag in the last scene always bothered me. No trained White Tails, I guess. Great movie other than that.
Factual error: The Force 10 finally manage to escape of the German ammunition depot by train. However, when the train leaves the tunnel and the men jump off the train the engine is a modern red and white electric locomotive. Only one problem: Electric trains did not exist in Yugoslavia until 10 years later. The engine is a mid-60's Swedish type RC.