Israeli soldiers are alleged to have set up the head of a Palestinian suicide bomber on a barrier, put a cigarette in its mouth and photographed soldiers posing around it. There is a message to those who send people to embark on such missions. The Israeli army doesn't get hurt here, unless, of course, soldiers get killed.
Regarding the tampering with corpses, this is an old allegation against the racist war criminals of Israel. Israel has been accused of stealing vital organs from dead Palestinians and even the UK Chief Rabbi has spoken out against Israeli soldiers posing with Palestinian corpses. He was so chastened over that he denied having said what he was recorded to have said. Let's see what he says now. My bet is nothing.