~10 hours and 14 minutes, which includes all collectibles and secondary objectives.
A "complete" veteran run is often documented in walkthroughs to showcase flawless tactical movement without checkpoints. Historical & Community Context Call of Duty 1
Call of Duty 1 Gameplay Walkthrough Part 4 - British Campaign ~10 hours and 14 minutes, which includes all
Starts with basic training at Camp Toccoa and follows Private Martin through the invasion of Normandy (Pathfinder) and the Battle of the Bulge. ~10 hours and 14 minutes