This book has been written to explain the steps taken by BSI in the mid-seventies to determine the Army's most effective battlefield systems architecture in hopes that the analyses taken then could be of value today. BSI thoroughly analyzed enemy (Soviets) military capabilities and by utilizing heterogeneous dynamic modeling determined the relative value of one combat system to others so that meaningful trade-offs between systems could be made and a balanced force designed. Combat power, a function of weapons lethality and the number of engaged combatants, can be increased both through weapons enhancements and force multipliers. Force multiplication is the friendly increase or enemy decrease of engaged weapons and depends greatly on intelligence, surveillance and target acquisition as well as effective command and control. Force multiplication is powerful!