In a Strategy Page post:
In Iraq, the army is also discovering the Israelis first noted in 1982, that older reservists have less capacity for combat stress than do younger men. Being older may make you wiser, but it also leaves you more beat up by the usual stresses of life. Older reservists, activated and sent to a combat zone, come back more the worse for it than do younger soldiers.
I would have guessed that older troops would fare better than younger ones. As this specifies “reservists”, and the source material is not linked, it’s hard to know what to make of it. Could it be that older reservists fare worse, being pulled out of a “normal” civilian life and sent to a combat zone, but that older active duty troops respond better because their “normal” life includes full-time soldiering?