From the book:
See the World, Meet Interesting People - and Kill Them!
In every nation, for all the eons of history, there have been those that stand a watch, who fight for those who remain blissfully unaware of the need for battle. Combat Missions features fifteen challenging assaults against a wide variety of seemingly-unrelated foes. These missions are ideal for one-off inserts into your existing serial, or run in a series. In the Combat Missions campaign option, your agents face off against a sinister conspiracy, brought to light through the apparently unrelated events, and they must bring it down before the conspirators bury them.