It should reduce by 1 the recruitment turns. For most units it will reduce them from 2 to 1, so it is hard to notice. It has more impact on orc factions that should get 0 recruitment times.
You may try to copy the file /Mods/lotrtw - Fast Recruitment/alexander/lotrtw/data/export_descr_unit.txt manually to /alexander/lotrtw/data/ in case the mod enabler is not working for you.
_Bardo_
David joined
Estudiante de Teleco, aficionado a la Inteligencia Artificial y la Robotica, creador de juegos de estrategia caseros, y colaborador del mod LOTR-TW.