Carlie, after action reports are great for locating a stressor, especially when a claimant has no idea of a date or doesn't even know the cause of their PTSD. I believe they are usually done at many levels, ie: corp, field force, division, brigade, etc. They decribe actions that happened, for units, during a certain period, in a certain area. From these a claimant can find more about their unit and it's actions, from the daily logs, kept by each unit. Daily logs were kept by each unit, depending on their activity, at the time.
The national archives has them and the archivists can be very helpful in finding almost anything needed.
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