I'll bite. Never did I ever meet anyone in the military that needed "two hours" to fall asleep when they had adequate physical exercise throughout the day.
If you're undiagnosed by a clinical physician for a disorder and have that issue, you're either sleeping too much, consuming too many stimulants, or not getting enough physical exercise.
Then why are you speaking to this particular case? Having a sleep disorder is not an immediate disqualifier for service, either. Did you serve in the military, or are you just throwing out more conjecture?
If you're undiagnosed by a clinical physician for a disorder and have that issue, you're either sleeping too much, consuming too many stimulants, or not getting enough physical exercise.
What's your exercise routine like?