Not the worst thing soldiers have done in war but still inappropriate especially since they videotaped it. This video will probably cause a few extra unnecessary Israeli deaths and less foreign support before this is through.
Deuteronomy 20:19 ESV
“When you besiege a city for a long time, making war against it in order to take it, you shall not destroy its trees by wielding an axe against them. You may eat from them, but you shall not cut them down. Are the trees in the field human, that they should be besieged by you?