If there was one area of almost desperate deficiency in Allied Command Europe (ACE) in the middle 1980s it was in air defence. Overall air defence planning in NATO only began to take real shape at the beginning of the eighties with the formulation of the Air Defence Planning Group’s programme. This was to take in all air command and control (both offensive and defensive), NATO airborne early warning, NATO IFF (identification friend or foe), the multi-functional information distribution system (MIDS) and air defence weapons. In a programme initiated in 1980, intended to be implemented over fifteen years, it was sad, if inevitable, that little progress had been made in the five years before the war. NATO looked like going to war with air defences of very uneven capability which cried out, as with so much else in NATO, for standardization.
Medium- and high-level missile air defence in ACE was still provided by
In the whole vital problem of controlling battlefield airspace, NATO IFF was one case of particularly badly needed rationalization and improvement. It is worth enlarging upon this as an example.
It is essential to know very quickly whether an approaching aircraft is hostile, IFF interrogates it by sending out a group of pulses to which another group of pulses is sent back in reply by what is known as a transponder. If this answer is correct — that is, as expected — the aircraft is friendly. If not, it is hostile.
The system, long in use, had been adequate when warfare was less complex, electronics less advanced, and airspace, especially lower airspace, less crowded. It was scarcely adequate in the 1980s. It could be jammed, either accidentally or deliberately. It could be ‘spoofed’ by an imitation of the right answer. The emission, whether of interrogation or answer, could be tracked to source and serve as a beacon to bring in guided- or homing-attack. It had blind spots. It had reliability problems. What was good for the 1960s was hardly good enough for the higher pressures of the 1980s. A soldier in a trench with a
As the 1980s opened, the urgent need for a new identification system for NATO was realized and a development programme launched. Its cost was estimated to be at least $250 million, and the resultant replacement of the current IFF, in which some $2,000 million had already been invested, could hardly be complete by the end of the century. NATO would have to go to war with the IFF it had, depending more and more upon procedural method in the management of airspace.