I draw your attention on the fact that Gallieni was Lyautey's mentor in Madagascar (read "lettres du Tonkin et de Madagascar" by the latter, unfortunatly i never encountered any translations in english). Lyautey's doctrine (or lack of Doctrine, because he was aware of the limitations that lies in any doctrine in Stabilization) relies on two principles:
-pacification is like progressive organisation: oil spot (inspired by Gallieni in Tonkin)
-force must be showed to avoid using it (translated today in the french concept of "Mastering of violence"... )