First Published in 1968. This book falls into three parts. The first gives some account of the impact of war upon the Commonwealth and upon its in­dividual member nations; the second records the post-war changes in its composition, while the third examines some of the domestic and external problems that confronted the Commonwealth in the bleak mid-years of the cen­tury. Each of these topics, if treated exhaustively, would require a volume and what is attempted in this book is no more than the analysis of certain themes which seem to bear most closely on the idea of the Commonwealth and its place in the history of our times.