OFMD began back in 1986 when the museum sponsored a one day event to demonstrate the use of antique canons and rifles. Over the years, the event has morphed into a weekend village of professional educators representing a timeline of world military history.
From the days of the Roman Legions to the Vietnam War, more than 600 participants setup camps and demonstrate what life was like during their represented time period. Throughout the day there will be various battle and equipment demonstrations from various groups competing for awards (given at the end of the day on Sunday) and looking to entertain visitors.