Complex sentence: From there he was appointed vice-consul in Karlsbad, Bohemia in July 1914, and served as senior vice-consul in Athens, Greece from 1915-1919.
Split into simpler sentences: From there he was appointed vice-consul in Karlsbad, Bohemia in July 1914. Waller was subsequently moved and served as senior vice-consul in Athens, Greece from 1915--1919.