Hey might be a stupid question but the expansion handful of missions, is that the 5 maps within Historical Missons? or am i missing something?

Yes, they are the historical missions :)

In the updated game, the previous (vanilla) missions are subsumed under "Marshall Training".

Hi, I find the historical missions are all about a handful of missions. So where are the original historical missions in Outlaws? I remember when I play 2CD version many years ago (no handful of missions), there are som original historical missions included, but I can't find them now.