Institutions in the Great War, law schools contributed heavily to the conflict by way of men sent to the front. They also played their part in the battle of ideas. Leading figures in this commitment, the deans of the faculties developed a mobilizing discourse for the benefit of their young students. Law is a weapon against the enemy. It is antithetical to war. Far from being the only ones to carry the flag of law, deans were part of an environment where legal doctrine also dealt with conflict in its various dimensions and implications. Propaganda efforts or diplomatic engagements, legal controversies or choice of thesis topics were all ways in which professors and students engaged in war.