This is a third-party supplement that provides additional World War I scenarios for Check Your 6!. This 48-page book covers 46 historical scenarios, all from 1918, including major engagements of the American Aero Squadron (many with Eddie Rickenbacker) and the last battles of many leading aces. Note: The original Check Your 6! rulebook and Colorful Skies (Volume 1) are required to use this supplement.