12 OCTOBER 1918, Page 21

Studies in Napoleonic Strategy. By Captain R. A. Hall. (Allen

and Unwin. 4s. 6d. net.)--This is an instructive little book, largely influenced by the writings of Marshal Foch and Captain Colin, on Napoleon's methods, with notes showing how in the first and second battles of the Marne the same principles have been applied with success by Marshal Foch himself. Captain Hall deals with Napoleon's first Italian campaign as a contrast to Waterloo, and with Ulm and Jena as a contrast to the Russian failure. At Waterloo Napoleon disregarded time ; in Russia he neglected the /actor of space.