If you visit a game page in the Library, towards the bottom are 3 charts listing the frequency of nations, battle types, and conditions among that game's scenarios.
As of now, if you click the nation / battle type / condition you will be linked directly to a list of the scenarios in question.
In other words, if you browse to
Afrika Korps and scroll down a bit you'll see that 10% of the scenarios are classified as "Patrol".
10% of 50 scenarios is 5, yes?
Now, if you click on "Patrol" you'll be taken to a list of
precisely those 5 scenarios!