Joseph, cite your source in the Maharal.. As for V’yoel Moshe, Rav Menachem Kasher refuted it in HaTekufa HaGedola. Are you saying that the Maccabees violated the Torah?
As for the question on the virtual floor, the Chafetz Chaim wrote a sefer called “Machane Yisrael” for Jewish soldiers in European armies. There is also a book on military ethics called אתיקה צבאית יהודית by Ido Rechnitz and Elazar Goldstein. It can be purchased online.