maybe u should ask them in detail about the signing on before enlistment, coz MP selections does not happen all the time and only a lucky 30 to 40 people can get it. During my batch,there were about 100 over people coz NDP is coming and we need the people for the Silent Precision drill performance. but recently there are only 30 to 40 people posted to provost. If u can sign on here b4 ur enlistment would be the best.Regarding the investigations, it's mostly AWOLs,Deserters(people who AWOL for a very long time), any issues that has to do with military stuffs(crimes that are committed by military personnel). I'm not from SIB so i'm not really sure.