This book looks at the only enemy aircraft actually to drop bombs on the continental United States, the Kugisho E14Y “Glen”. We are given the history of its development and its technical details, as well as the details of the two bombing missions over the Oregon coast and other operations across the Pacific. It should be noted that the Japanese were the only nation to use submarine-based aircraft in any quantity.
This book begins with a discussion of the first Japanese experiments with submarine-based aircraft, as well as the aircraft preceding the E14Y in service. A nice overview of the E14Y follows, with discussions of its operations for the IJN. One thing of interest is the joint operations of both Japanese and German submarines from the base at Penang (part of modern Malaysia). It even appears that there was a possible exchange between the Axis powers with an E14Y being traded for an Arado Ar-196.