Based on Tanna D’vei Eliyahu Rabbah it seems on the ideal level there is a value of Torah Scholars participating in a war against enemies like Sisera.
A translation of Tanna D’vei Eliyahu Rabbah (Ish Shalom) Parsha 11″ Another interpretation [of the verse]: There let them recite the righteous acts of Hashem, the righteous acts toward the inhabitants of his villages in Israel … (Judges 5:11): If there … Continued