The book Infantry in battle by George Marshall was the inspiration for this book which has been written to reflect its own times, not Marshall's. The thirty-six chapters that follow have been chosen to reflect changes in the military art since Marshall's times. Each chapter deals with one case drawn from recent military history that illustrates and illuminates a problem with which a modern professional soldier may someday have to contend. Each case is set in its strategic and operational context, explained in detail, and briefly analyzed. The book is intentionally designed to be read piecemeal, a chapter at a time, in order to make it as broadly useful to professional soldiers no matter where or in what capacity they are serving-in the field, on the staff, or in the Army's institutions of higher military education. Recognizing that some readers may want to know more about a particular case, a bibliography following each is included.