German fortifications refer to military structures built to defend against attacks, particularly during the two World Wars. These fortifications included bunkers, trenches, and concrete walls designed to protect soldiers and equipment. Notable examples include the Siegfried Line in World War I and the Westwall in World War II, which aimed to deter enemy advances. The design of German fortifications often emphasized strong defensive positions and interlocking fields of fire. They were strategically placed to control key terrain and provide shelter for troops. The effectiveness of these fortifications played a significant role in various battles throughout the conflicts.