Complex sentence: He had a specialism in naval gunnery and was Superintendent of Ordnance Stores at the Admiralty during the period of the Anglo-German naval arms race when the Dreadnought Fleet was developed and advocated for the construction of the largest guns possible.
Split into simpler sentences: He had a specialism in naval gunnery and was Superintendent of Ordnance Stores at the Admiralty during the period of the Anglo-German naval arms race when the Dreadnought Fleet was developed. He advocated for the construction of the largest guns possible.