Geneva Convention relative to the Treatment of Prisoners of War, 75 U.N.T.S. 135, entered into force Oct. 21, 1950.
In relation to the Israelis in Palestine:
In January 2009 and during the First Gaza War, the then spokesman of the Israelis, the Australian Zionist migrant, so not an Semitic person, Mark Regev, who later was appointed as 'ambassador' of the Israelis to the United Kingdom, was asked by a British TV crew: "Are the Israelis at war". He answered: "We're at war in all times". Regev actually admits that the Israelis never lifted the stage of war since 1967.
In 2006, the United Nations issued a warning that actions by Israelis in Lebanon could mount to war crimes.
On May 7, 2021 the United Nations issued a warning that forced eviction of occupied civilians from Sheikh Jarrah in East Jerusalem could be a war crime when carried out.
Between this period, the United Nations have issued more of such warnings.
If we translate these warnings into the context of international law of war, with these warning the United Nations (still) considers the Israelis are war belligerent.
Israeli troops but those who visibly can be recognized as from civilian forces while acting and operating inside the occupied territories, including East Jerusalem, they not only belong to the occupying forces but also to the occupying power as a whole. They are subjected to this same Convention as the regular troops because the civilian forces act and operate the way the occupying forces are doing.