Originally published in 1943, this book contains the text of lectures delivered by Dr. J. T. Macurdy to groups of officers from the army and the auxiliary women's services early in WWII. Macurdy, who had made one of the earliest studies of 'war neuroses' during WWI, discusses the nature of fear, the national factors at play in the creation and sustainability of morale with reference to the Allied and Axis powers, and the significance of psychological factors in practice in an organized community. This book will be of value to anyone with an interest in the history of psychology or the role of the psychologist in wartime.