Starting with my goal of adding management and leadership roles to the model railroading activity I found that I needed the population on the layout to be something beyond figures glued to the table top. 

After searching for rules to use and a lot of thought on the subject I am now painting figures and building a campaign system to run concurrent with the train operation on my layout.  I plan to hold railroad operating sessions and war gaming sessions that alternate as both sessions at the same time seems like it would be a bit much.  The sessions will be linked financially so costs and income for a company will transfer between both types of sessions.

Using war gaming as part of the simulation I can add things like risk management and dealing with diverse personnel requirements to the mix.