At some point after 1926, Naval Forces, European Waters, went into abeyance. Later, in March 1942, the duties of the existing Special Naval Observer London were expanded to command naval forces. Commander, Naval Forces, Europe was established to maintain Navy bases in the United Kingdom and to report intelligence and research data being provided by Allied intelligence organizations. Numerous liaison channels were opened with the British Government and with governments in exile. The command also assisted in the planning and preparation of the invasions of North Africa and France. By 1944 the headquarters had been established at 20 Grosvenor Square, in central London. The building was only vacated by the Navy when the headquarters moved to Italy in 2009.