Remember the D-Day Dodgers from sunny Italy? The Eighth Army.
Away in the sand pit for three years without a single break, their reward was the invasion of Sicily followed by the Invasion of Italy and the advance upon Rome, fighting every inch of the way. For most of them it was five years away from home fighting with shortages of food, ammunition and in many cases with obsolete equipment. They came home fit, sane (mostly - Spike Milligan is an obvious exception) and randy and got on with the rest of their lives without counselling or help. Millions of their comrades in arms - and their enemies too - went through the same without cracking up. Are the 'psychological effects of overstretch' a bit over-stretched perhaps?
Sorry, but you're wrong. We have a generation of people in their 20's who tell of fathers who fail to connect with them. Why? Because
their dads were distant to them and now the problem is too late to address. Its one of the reasons why the 70s was so introspective and thoughtful.. we had folk in their 20s and 30s struggling to find themselves, because they hadn't been guided. 'I don't like to talk about it' was for decades missinterpreted as a quietly proud and very British way of expressing oneself. We now know that in many instances, it was a wasted generation crying inside and no one was listening.