MW,
In Mishna Tora he clarifies that “war” refers to a milchemet reshut and “conquering cities” means outside EY. You still have not defined a talmid chacham. It is certainly not some butterfly (the Israeli slang expression) who is officially listed as a talmid but goofs off. In practice, Rav Tzvi Yehuda (Kook) gave a personal pesak to each talmid in his yeshiva. Moreover, you have not dealt with the suggestion for establishing military battei midrash whose students will be officially part of the IDF like other support troops learn for the success of the combat troops. Asfor Rav Moshe’s teshuva, with all due respect he is a daat yachid. It is also very puzzling as Rabbi Akiva and his colleagues supported Bar Kochba. Moreover, it is against Rambam, Ramban (in his Sefer HaMitzvot), the Ran and the Netziv as I previously posted.