speed with which it can collect and transmit information, to a great extent lifts the fog of war and enables a general to act on knowledge where before he acted largely on deduction. Information once obtained, its mobile and far-reaching offensive power introduces the element of surprise, and permits of lightning strokes against the enemy's vital points.

Before the war reconnaissance was regarded as the principal duty of the aircraft of the Military Wing. This was due to two reasons, first, the obvious one that aircraft possessed advantages shared by no other arm for obtaining information quickly and over wide areas and reporting to Headquarters, and second, that experiment had proved the difficulty of loading aeroplanes with offensive weapons, such as bombs or machine guns, without impairing speed and climb.

The following statement, which I drafted and which was issued by the General Staff before the Army Manœuvres of 1912, summarizes the position:—