CHAIRPERSON
Generally speaking, there'll obviously be exceptions, but personal gain really means being rewarded for performing a particular act, either by being paid by somebody to do it, normally by prior arrangement that there will be a payment, or of course in the event of a robbery by that being the prime motivation, is to go there to benefit oneself by stealing goods.  Personally I mean a soldier receives a salary, it's not covered by the Act I'm sure, so it's looting maybe, and being rewarded for a particular act.