Count Ferdinand von Zeppelin began experimenting with rigid airships in the late 1800s, creating his first successful rigid airship the LZ 1 in 1900. In 1908, the German military purchased the LZ 3, proving the military worth of rigid airships. During World War 1, Germany used Zeppelins for bombing raids on cities and in combat for the first time in 1914. However, the development of incendiary ammunition made Zeppelins vulnerable to being shot down in flames. The Treaty of Versailles after World War 1 forced Germany to surrender its Zeppelins. The company ceased production until 1924 when the US purchased the LZ 126, reigniting interest until the Hindenburg disaster