The AS90 represents an entirely new concept in the tactical employment of artillery in war, including nuclear war, beyond the scope of this paper to describe. It can operate entirely on its own, ie without a command post to calculate gun data, or a troop leader to lead it into action. The AS90 has no dial sight! As it has its own means of obtaining accurate orientation it needs no director to put it at the centre of arc (zero line to World War 2 Gunners). It is equipped with an inertial navigation system (INLS), so that having been given the grid reference of his gun position the Number 1 goes to it without further assistance. The gun can come into action within 1½ minutes and be out of action in less than one. It carries 48 rounds of ammunition and can fire a burst of three rounds in ten seconds. A battery can put over a tonne of shell on a target in the same time to a range of 24700 metres.