As Drake said, long event or complixity of scenario are not factors. For me, you need 2 things to convert ANY mission/scénario to a milsim : A good planning phase and an execution using military procedures. The simpliest mission with a small amout of time can be 'milsim' if you have these 2 things. The planning phase is, by far, the most neglected part.
Basics :
http://www.armystudyguide.com/conten...edures-3.shtml
http://www.armystudyguide.com/conten...er-opord.shtml
Try it and have fun
