Military Suicides.... I need some help finding statistic data for pharmaceutical use that caused it

Anybody got info as to how many suicides in the military since 2000 have had a link and or use of pharmaceutical drugs or psychotropic drugs used prior to suicide. I need to present this evidence to some officers that think we need suicide prevention training..... I just want to cut the crap and state the reasons why soldiers are haveing issues. The army cares so much along with the DOD, but truth be told how many of these soldiers were on some sort of drug/ antidepression/psychotropic... thanks for the help guys, and i need credible sources to print off.