Jaeger Company, Organization 90*
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These companies are mainly meant for mobile operations such as delay and attack. They are the muscle in Jaeger Battalions and fight in close cooperation with supporting units such as AT, ATGM, Pioneer and artillery. To combat a strong and well armoured enemy, Jaegers should choose terrain most restricting to armour movement, something that Finland has plenty. The unit has quite strong close-range firepower with plenty of light AT weapons. The three Jaeger platoons are supported with FO Sections from the FO platoon to call in indirect fires from the company's own light mortar platoon, the battalion's heavy mortar company and supporting artillery groups. The shock effect is to be achieved with fast and vicious artillery preparation and by quickly moving to enemy flanks using terrain with dense woods, swamps and deep snow, where the troops silently move on foot/skis.* 
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To attack effectively, the Jaegers need all the support they can get from heavier and longer range AT/ATGM -units and pioneers that breach enemy minefields and also build barriers to deny enemy armour passage to help out the force under attack. Battalion's shoulder-launched SAMs are also needed to keep the enemy choppers and ground attack planes in bay. In delay and defence the Jaegers also need support, especielly in form of minefields and AT killzones.*
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During fighting the vehicles are left behind and used for support duties as the lightly armoured APCs and unarmoured BVs would not stand a chance against the enemy armour. The unit has very limited number of radios that are mostly used for calling down indirect fires. For this reason the unit leaders need to give good orders down to their subordinates before the fighting begins, and during fighting the lower ranks are supposed to fight according to commander's intent, using mission based tactics.*
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HISTORY:*
Brigade 90 -organization emerged in the 1980's. It was one of the answers to the question of mobility which had plagued the FDF since 1960s. There was the doctrine of areal defence, where areal forces would attrit and stop the enemy attack and then the enemy would be destroyed with fast and decisive counter-attack by fast moving reserves. The problem was that in addition to the armoured brigade, there were no such units.*
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During 1980's the focus of development was in the Army. To fill the need for fast reserve units, brigades with modern APCs were equipped. In southern Finland, the Sisu XA-series "Pasi" APC was seen as the best vehicle to allow fast operational movement over vast distances, thanks to the high road speed. In northern Finland the task was given to BV206 and Sisu's NA -series of all-terrain vehicles, that could easily cope with the roadless tundra, deep snow and wet marshes so typical there. With these new vehicles in use, there was a chance to keep the reserves away from the fighting and bombardment and then quickly concentrate the counter-attacking force to gain areal superiority.* 