The quote discusses the expectation of the Lusitania's sinking and how this tragic event was seen as a new type of warfare, fitting the guerrilla tactics that Germany was employing. This highlights the strategic approach of the German forces during World War I, signaling a shift in conflict dynamics where traditional naval engagements were replaced by more insidious methods. The situation created an atmosphere of fear and uncertainty, demonstrating how modern warfare was evolving.

Erik Larson's book, "Dead Wake: The Last Crossing of the Lusitania," delves into the historical context of this event. It portrays the journey of the Lusitania and the circumstances leading up to its attack, providing a detailed narrative that combines personal stories with broader historical analysis. The book not only examines the disaster itself but also the implications it had on international relations and public perception of the war, illustrating the complexities of wartime decisions and their far-reaching consequences.