The term of office of Lambros Koromilas (1904-1907) was of major importance because he organised the special secret services for the Greek Struggle for Macedonia within the consulates, known as the “Centers”. The “Center” in Thessaloniki collaborated with the other “centers” in Macedonia and directed operations. It was staffed mainly by officers, who were in contact with local agents and armed bands. They were also in communication with the national committees that were staffed by the inhabitants of Macedonian villages and cities. The Consulate building frequently hosted fighters who entered unnoticed through a side door into the courtyard of the neighboring episcopal residence.