For military planners, the control of information is critical to military success, and communications networks and computers are of vital operational importance. The use of technology to both control and disrupt the flow of information has been generally referred to by several names, information warfare, electronic warfare, cyberwar, netwar, and Information Operations (IO). This book is a focus on electronic warfare which is defined as a military action involving the use of electromagnetic and directed energy to control the electromagnetic spectrum or to attack the enemy. This book consists of public documents which have been located, gathered, combined, reformatted, and enhanced with a subject index, selectively edited and bound to provide easy access.