Philadelphia Public Ledger:
"A book by an expert in modern armament who writes with graphic power what he knows better than anyone in this country—a solemn warning."
New York American:
"No book issued on the subject marshals with equal skill so great an array of facts as Mr. Maxim's volume. In the present state of national thought upon our military and naval needs this book is most valuable."
Washington Star:
"In origin and treatment this is a surpassing study whose sheer information, apart from its personal conclusions, is worth the serious attention, not only of the legislator, but of the plain man behind the lawmaker."
Detroit Free Press:
"Hudson Maxim makes a call to arms against war. Here is an argument for proper armament from a man who not only foretold the Japanese war and named the victor, but also prophesied the present conflict and by knowledge and study of world's conditions knows what he is talking about and makes his warning timely."
Los Angeles Times:
"A powerful book on an imminent and national problem that every thinking citizen should read with care."