Complex sentence: Admiral Sir Sackville Hamilton Carden KCMG (3 May 1857--6 May 1930) was a British admiral who, in cooperation with the French Navy, commanded British naval forces in the Mediterranean Sea during the First World War.
Split into simpler sentences: Admiral Sir Sackville Hamilton Carden, (3 May 1857--6 May 1930) was a senior Royal Navy officer of the late nineteenth and early twentieth centuries. In cooperation with the French Navy, he commanded British naval forces in the Mediterranean Sea during the First World War.