I believe everyone deserves the benefit of the doubt it is our system.
But, if the facts are as they have been written, he used bad judgement. It is just my humble opinion.
A young girl was injured. Not severely and he was lucky it was not severe.
But, to already have the "Iraq Syndrome" entering the mix, it seems he might know what he did had consequences that now he is blaming his service in Iraq. That would be low. Again, imho.
In the population, a certain number will turn out to be rapists, illegal drug users and bank robbers. You can't blame their choices as an excuse on their military service though.