This new edition of the rules includes a number of changes from the first edition of Team Yankee. One of the most important changes you will find in World War III: Team Yankee is to the Artillery rule mechanics. The Morale rules have been updated to be essentially the same to Flames Of War. Morale is simpler and easier. Vehicles no longer become Bogged Down if they fail a Cross Check, they now simply stop moving until their next turn. They can still shoot in the Shooting Step. The mission section has been updated, adding extra missions and the Battle Plans Mission Selector. No army books will become invalidated in the transition. No Unit Cards or Unit entries in current books will be invalidated. Each new book from now on will also be released with its own Unit Card pack. —description (extract) from the publisher