Pacific Blitzkrieg closely examines the planning, preparation, and execution of ground operations for five major invasions in the Central Pacific (Guadalcanal, Tarawa, the Marshalls, Saipan, and Okinawa). The commanders on the ground had to integrate the US Army and Marine Corps into a single striking force, something that would have been difficult in peacetime, but in the midst of a great global war, it was a monumental task. Yet, ultimate success in the Pacific rested on this crucial, if somewhat strained, partnership and its accomplishments. Despite the thousands of works covering almost every aspect of World War II in the Pacific, until now no one has examined the detailed mechanics behind this transformation at the corps and division level.

Sharon Tosi Lacey makes extensive use of previously untapped primary research material to re-examine the development of joint ground operations, the rapid transformation of tactics and equipment, and the evolution of command relationships between army and marine leadership. This joint venture was the result of difficult and patient work by commanders and evolving staffs who acted upon the lessons of each engagement with remarkable speed. For every brilliant strategic and operational decision of the war, there were thousands of minute actions and adaptations that made such brilliance possible.

Lacey examines the Smith vs. Smith controversy during the Saipan invasion using newly discovered primary source material. Saipan was not the first time General "Howlin' Mad" Smith had created friction. Lacey reveals how Smith's blatant partisanship and inability to get along with others nearly brought the American march across the Pacific to a halt.

Pacific Blitzkrieg explores the combat in each invasion to show how the battles were planned, how raw recruits were turned into efficient combat forces, how battle doctrine was created on the fly, and how every service remade itself as new and more deadly weapons continuously changed the character of the war.