Over the past forty years, the military history of pre-Crusade Europe has benefited from considerable scholarly attention, with the notable exception of the kingdom of Germany. This lacuna is due, in large part, to Germany's own modern history and a tradition of hostility to the study of military matters in the aftermath of the Second World War. As a consequence of the neglect of this topic, the more general histories of medieval Germany tend to rely on outmoded generalizations regarding the conduct of war, which have been substantially refined or even abandoned for other regions of Europe. This study, therefore, is intended to help illuminate the nature of warfare in early eleventh-century Germany through an examination of the lengthy military conflict between the German ruler, King Henry II (1002– 24) and Duke Boleslav Chrobry of Poland (992–1025). In the context of examining the series of military campaigns undertaken by Henry II in the period from 1004 to 1017, this essay considers the interplay of politics, military organization, logistics, strategy, and tactics with the pursuit of long-term objectives.