555,
1. WW2 survivors? Were they American soldiers? A smile can mean various things.
2. What Chareidim “targeted” by Zionists? As for a religious Jew in an IDF uniform, what can be better? Wearing the clothes of the paritz? There is an obligation to be in the army in a milchemet mitzva – and we are in an ongoing milchemet mitzva with breaks. We all want it to end but not by surrendering. THere is an obligation to conquer and settle EY – and that obviously pushes off pikuach nefesh (Minchat Chinuch Mitzva 604 section 4).