- Scenarios are large-scale battles that run a few times a year. Sometimes they are based on actual WWII battles, such as the Battle of Britain. Sometimes they are based on hypothetical battles that might have been. A scenario typically involves about 200 people divided into two sides. Each side has particular aircraft, mission objectives, squadron assignments, bases, and resources. A scenario typically runs over the course of a month, with one battle per week, each battle lasting 3-4 hours. If you ever wanted to be a real WWII pilot, this is about as close as you can get.