The Defense Equal Opportunity Management Institute has created a strategy to guide you in creating and maintaining a culture of prevention, response and support and how to intervene should issues arise. You can read more tips on how to create that culture here.
The Department of Defense Sexual Assault Prevention and Response Program has a wealth of resources available to support victims of sexual assault. Understanding the roles and responsibilities of each of these responders, as well as at what point each responder may be involved in a case is incredibly important. DoD SAPRO has put together a response flowchart which you can access here.