Historically speaking, "I vos only obeying orters" is a pretty flimsy excuse.
There are illegal orders, and it is an officer's duty to disobey them and not to commit war crimes. And deliberately targeting civilians is a war crime.
Hell at Nuremberg we even stuck some of the top German military leaders with "planning and waging an aggressive war" as being a war crime.
I'm not necessarily saying that Israel has deliberately targeted civilians, nor that it's waging an aggressive war, but this may be the defence used by these chaps.