If you read the article, the last paragraph says this:
Col. Karim asks to clarify that his statement was issued as the answer to a theoretical question and not in any way whatsoever a question of practical Jewish law. Rabbi Karim has never written, said or even thought that and IDF soldier is permitted to sexually assault a woman in waranyone who interprets his words otherwise is completely mistaken. Rabbi Karim's moral approach is attested by his years of military service in command, combat, and rabbinical positions in which he displayed complete loyalty to the values and spirit of the IDF, in particular the dignity of the person.
If you're looking for a religion that explicitly advocates rape of captured women, try to find what "holy" book contains this quote:
Also (forbidden are) women already married, except those (captives and slaves) whom your right hands possess. Thus has Allah ordained for you.
What was the theoretical question? What does it change that the answer is theoretical? The US military code of conduct is theoretical too... And you can ask 100% of chaplains none will ever theoretically answer something like that!