In general the more details you give the better. So not only the game that the scenario is in but also what optionals rules are wanted or if any house rules are to be used should be mentioned.
As currently the very old games have scenario that do not use the weather feature it should also be mentioned if Team Banshee's weather versions of the stock scenarios are to be played as that requires to install these scenarios.
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Lieutenant General Christian Hecht
Commander I Corps, Army of the Potomac
"Where to stop? I don't know. At Hell, I expect."