 Ilg was leading in the construction of several public buildings and worked as "chef de protcolle" and secretary for the emperor, receiving the highest medal available, the Star of Ethiopia.Further achievements worth mentioning are the creation of a unified national currency system and the erection of a postal system.When Friedrich Rosen, an orientalist and leader of an official German delegation established several treaties between Ethiopia and Germany on 7 March 1905, Ilg's influence at court began to dwindle.