Discovered this game today and am curious about replay-ability. I noticed that it appears for all of the WaW series that each box comes with 'canned' scenarios that include predetermined OOB. If that is the case how do you continue to play after you've played through each of the scenarios...

Yup - that clarifies it for me. Thanks!

Is there a base LnL game that one needs to purchase first? They appear as stand alone with ad-don / expansions. However, I did come across one expansion that said I needed Band of Heroes? Please advise.