The German Kaiser was the title given to the emperor of Germany, especially during the time of the German Empire from 1871 to 1918. This position was crucial in shaping Germany's political landscape, as the Kaiser had significant authority over military and foreign policy, while also representing national unity. The role of the Kaiser became increasingly important during World War I, as he embodied both the ambitions and the struggles of the German nation during a time of conflict and upheaval.