The Secretariat. This was the "office force" - the administration of the League. It kept records of League meetings and prepared reports for the different agencies of the League. The Secretariat had specialist sections covering areas such as health, disarmament and economic matters.

The Secretariat: The Permanent Secretariat, established at the seat of the League at Geneva, comprised a body of experts in various spheres under the direction of the General Secretary.
The principle Sections of the Secretariat were: Political; Financial and Economics; Transit; Minorities and Administration (Saar and Danzig); Mandates; Disarmament; Health; Social (Opium and Traffic in Women and Children); Intellectual Cooperation and International Bureaux; Legal; and Information. Each Section was responsible for all official secretarial work related to its particular subject and prepared and organized all meetings and conferences held in that connection.
The staff of the League's secretariat was responsible for preparing the agenda for the Council and Assembly and publishing reports of the meetings and other routine matters, effectively acting as the civil service for the League. The secretariat was often considered to be too small to handle all of the league administrative affairs. For example, the total number of officials classed as members of the Secretariat was 75 in September 1924. The total staff, including all the clerical services, comprised about 400 persons. (Wikipedia March 2010)