Military-related nightmares (repetitive training may be leading to repetitive nightmares) vs civilian-related nightmares (more variations of the nightmares and may be easier to reality test during the nightmare).
If civilian-related trauma, if remind oneself there are multiple resources/support available, even if one does not tap into them, helps reduce trauma and PTSD symptoms, if the trauma threat is gone.
If military-related deployment, if remind oneself as soon as you return there are multiple resources/support available, it should help reduce the trauma and PTSD symptoms.
-Dr. P