German forces refer to the military units of Germany, particularly during significant historical periods such as World War I and World War II. These forces were organized into various branches, including the Heer (army), Luftwaffe (air force), and Kriegsmarine (navy). They were known for their advanced tactics and technology, which played a crucial role in their military strategies. During World War II, German forces were involved in numerous campaigns across Europe, employing blitzkrieg tactics that emphasized speed and surprise. The leadership of figures like Adolf Hitler and military strategists such as Erich von Manstein shaped their operations, leading to both significant victories and eventual defeats.