Listen to what your peers and subordinates have to say. Watch for changes in attitudes and performance that may indicate personal problems. Train your soldiers. Be sure they know the rules and can use the existing system to correct problems and take care of the victims. Take a stand.
Counsel subordinates when they step out of line.
Speak up when you know another's actions are wrong. Take swift and appropriate action. Intervene when you see sexual harassment. Never imply that you condone inappropriate behavior, or that you're ignorant of what's going on. Encourage and develop assertiveness in others, as well as yourself.