RE "..... would not be aware of technology capabilities used to track opposing fighters...." There would be techniques used to determine location of Hamas fighters , therefore making that location a military target.
You really have to be more specific. Israel has a lot of techniques used to justify killing known non-combatants, civilians or even engaging in fratricide.
Hannibal directive the way you describe it, doesn't exist as well. Even looking at wiki page will confirm it: "it is clearly stated that, in case of an attempted abduction, soldiers should fire at the abductors "while avoiding hitting the captive"