Given a government has decided that it will release its armed troops to use deadly force against an enemy in what ever possible way they can - the ultimate insult to another human being - how can they be so hypocritical to criticize the same troops when they show a fairly subdued level of relief at having survived the conflict they have been ordered to undertake?
Because it's a slippery slope strake. It's trophy photos such as this one day, and filming post battle executions on helmet-cams the next day.