This book consists of 5 topics related to German history, which are the following: Clausewitz - Carl von Clausewitz, a Prussian general and military theorist, remains one of the most influential figures in the study of warfare. Born in 1780 in Prussia, Clausewitz entered the military at a young age, where he quickly distinguished himself as a talented strategist and thinker. His career spanned the Napoleonic Wars, where he gained practical experience in the field, as well as in the more reflective study of military theory. Kaiser Wilhelm II - Wilhelm II, the last German Emperor (Kaiser) and King of Prussia, ruled from June 15, 1888, until his abdication on November 9, 1918, marking the end of the German Empire. His reign was tumultuous, characterized by grand ambitions and disastrous decisions that not only reshaped Germany but also contributed to the broader context of global conflict. Prussia - Prussia, once a powerful and influential German state, traces its origins back to 1525, when it began as a duchy focused on the region near the southeast coast of the Baltic Sea. Over the centuries, it would grow to play a pivotal role in European history, especially through its military and political influence. The Berlin Wall - From 1961 until 1989, the Berlin Wall stood as a stark symbol of division, not only physically separating the city of Berlin but also representing the broader ideological rift between the East and the West during the Cold War. On August 13, 1961, the German Democratic Republic (GDR), or East Germany, began constructing this formidable barrier. Visigoths - The Visigoths were a significant Germanic people whose influence shaped the course of European history during late antiquity, a period commonly known as the Migration Period. Along with their eastern counterparts, the Ostrogoths, they were among the most powerful and notable Gothic factions within the Roman Empire during its decline.