and promising heliborne system in the United States forces known as SOTAS (stand-off target acquisition system) with a moving-target indicator radar. This had just begun to come into service by mid-1985. The few aircraft that had this capability when war broke out were to prove of high value in tracking the movement of enemy vehicles and providing divisional commanders with adequate information to permit them to attack second echelon forces with mass fire power as the prelude to planned counterattacks. Attack upon the second echelon, or follow-up forces, had long been seen to be one of the most important ways of diminishing the forward momentum of the Soviet attack. Anything that could contribute here was valuable. Another sensor system, the remotely-monitored battlefield sonar system (or REMBASS, in the uncouth language of technical acronyms which military equipment seems to spawn so freely) was expected to come into NATO service in 1983 or 1984, but this was another of those battlefield aids of the highest importance that had been held up in the pipeline.
It was ironic that by August 1985 the means of attacking hard targets in depth was still well ahead of means of finding targets to attack. The new ammunition available to 155 mm guns in NATO from the US armoury included Copperhead, the cannon-launched guided projectile. Copperhead required a laser beam to be reflected from its target by a source known as a designator. The projectile then homed in on this. The problem was to keep the laser directed at the target tank during the critical time. Stay-behind parties of stouthearted men had been trained in this and had the necessary communications to synchronize their target designations with the firing of missiles from up to 15 kilometres behind them. Following targets moving at 30 kph across country is no easy matter, however. Moreover, laser designators were still in 1985 bulky items of equipment, not easy to conceal and almost impossible to move around by stealth.
The remote anti-armour mine system (RAAMS), which could also be delivered by guns, proved to be an important and lethal partner to Copperhead. It was highly effective in attacking the bellies of tanks where the plate was not more than 20 mm thick. Several salvoes from a 155 mm artillery battery produced small minefields scattered around tank concentrations which restricted movement and gave better opportunities for Copperhead.
A novel and useful munition came into service in USAREUR in
1984 called seek and destroy armour, shortened into the not infelicitous little acronym SADARM. An artillery projectile exploding in an airburst releases sub-munitions, which then descend by parachute, swinging and scanning for hard targets. Their sensors emit millimetric wave signals and where there is a response (which would hardly come from anything but a tank or self-propelled gun) the sub-munition fires a charge through the top of it. Although a virgin weapon in 1985, these looked like being winners and V and VII US Corps took in the relatively small numbers available most gladly. The very high importance of early reduction in the numerical superiority of Soviet tanks fully justified the accelerated funding of this project in the early 1980s.
Artillery guns (as opposed to rocket equipments) were of course of the highest importance. Happily the Western allies had long agreed on a common calibre of 155 mm. A towed version of a British-German-Italian gun in this calibre (the FH-70) had already been operational for some years. What was needed was the self-propelled version of the same gun, the SP-70. Such of these as were in service in 1985 were expected to survive well on the battlefield and prove themselves to be agile and effective, the improved ammunition and range of up to 29 kilometres being most welcome. In far greater numbers, however, the familiar American-built SP M-109 and M-110 would still provide the main means of artillery fire-delivery in depth.
Dangerous though