This study investigates the strategic planning, logistical failures, and eventual abandonment of Operation Sea Lion, the German military proposal to invade Great Britain during the Second World War. Ronald Wheatley utilizes captured German archives to reconstruct the decision-making processes within the Third Reich. By analyzing primary source documents, the author provides a rigorous examination of the operational constraints and internal political friction that prevented the invasion from moving beyond the planning phase.

Experts recognize this work as a foundational text for understanding the operational realities of the proposed invasion of Britain. Readers frequently note the academic density of the prose, which provides a comprehensive and authoritative account of the subject matter.