7 NOVEMBER 1891, Page 14

The Principles of Strategy. By John Bigelow, jun. (T. Fisher

Unwin.)-Lieutenant Bigelow has put together in this volume a number of observations and conclusions which will be greatly useful to students of military science. Tactics, strategy, the rules of operating from a base, of retreat, and other operations of war- fare, are treated fully, and illustrated "chiefly from American campaigns."