Complex sentence: At the start of the First World War "Hermes" was again converted to a seaplane tender, delaying her re-entry to service until 31 August 1914; she was then part of the Nore Command and used to ferry aircraft to France.
Split into simpler sentences: At the start of the First World War "Hermes" was again converted to a seaplane tender, delaying her re-entry to service until 31 August 1914. She was then part of the Nore Command and used to ferry aircraft to France.