 With the end of the Dardanelles Campaign in January 1916, British naval forces in the area were reorganized, and Agamemnon became part of the Eastern Mediterranean Squadron, which was re-designated the Aegean Squadron in August 1917. Under both names, the squadron was dispersed throughout the area to protect Allied-held islands, support the British Army at Salonika, and guard against any attempted breakout from the Dardanelles by the German battlecruiser Goeben and light cruiser Breslau. Agamemnon spent the remainder of the war based at Salonika and Mudros, alternating between the two bases with her sister Lord Nelson; Agamemnon was based mostly at Mudros, Lord Nelson mostly at Salonika. While carrying out these duties, Agamemnon damaged the German Zeppelin LZ85 on 5 May at Salonika with a shell from a 12-pounder and forced it to crash-land.
