Advance
Improved Logistics
The modern art of war nowadays clearly differentiates between amateur officers who talk about tactics, and professional officers who actually study logistics.
Advance tree
The game files don’t say where this goes: it has no requires, so the game places it in the 
Revolutions tree itself.
Modifiers
Definitionin_game/common/advances/4_choices_mil.txt:415
417icon = glorious_arms
418for = mil