upon in place of that of War Staff) should be made executive, and that
the First Sea Lord should assume his correct title as Chief of the Naval
Staff, as he had, in fact, already assumed the position.

At the same time the operational work of the Staff was grouped under two
heads, the first mainly concerned with operations against the enemy's
surface vessels, and the second with the protection of trade and
operations against the enemy's under-water warfare, whether the means he
employed were submarines or mines.

The officer, Vice-Admiral Sir Henry Oliver, K.C.B., charged with the
supervision of the first-named work was styled Deputy Chief of the Naval
Staff (D.C.N.S.), and the officer connected with the second,
Rear-Admiral A.L. Duff, C.B., was given the title of Assistant Chief of
the Naval Staff (A.C.N.S.).

The duties of Director of the Anti-Submarine Division of the Staff,
hitherto carried out by Admiral Duff, were at this time taken over by
Captain W.W. Fisher, C.B., who was brought down from the Grand Fleet for
the purpose. Captain Dreyer, who had been Admiral Duff's original
assistant, had in the meantime been appointed Director of Naval
Ordnance, and had been succeeded by Captain H. Walwyn, D.S.O.

The Mine-Sweeping Division of the Staff was also formed, and the
importance of the question of signal communications was recognized by
forming a Signal Section of the Staff.

The adoption of the title of Chief of the Naval Staff by the First Sea
Lord necessarily made the functions of the Staff executive instead of
advisory.