2. Ottoman Empire: The Ottoman Empire was another key ally of Germany during World War I. The two countries had signed a secret alliance in 1914, and the Ottomans entered the war on the side of Germany in November 1914. The Ottoman Empire's involvement in the war opened up a new front in the Middle East, and it also served as a base for German military operations against Russia.
3. Bulgaria: Bulgaria joined the Central Powers in October 1915, after being promised territorial gains by Germany and Austria-Hungary. Bulgaria's entry into the war helped to strengthen the Central Powers' position in the Balkans, and it also allowed Germany to launch an offensive against Serbia.
4. Other Allies: In addition to these major allies, Germany also had a number of other allies during World War I, including Albania, Finland, Luxembourg, and the Maldives. These countries provided varying levels of support to Germany, ranging from military assistance to economic cooperation.