 This event meant that the original expedition had now accomplished all its main aims, that is, surveying the lands of Northern Nigeria and Niger (contributing to a clearer Franco-British delimitation of the colonial borders), uniting with the Foureau-Lamy mission and destroying Rabih's empire, which permitted the institution in September by the French government of the Military territory of Chad.Having achieved their goals, Joalland and Meynier left Chad and returned to French Sudan and the Niger River by November.Joalland, the doctor Henric and the other French officers, due to the military success of the campaign, were able to avoid court-martial.