Croneiss was one of the German pilots assigned to duty with Germany's allies, the
Ottoman Empire. As such, he was assigned to
Feldflieger Abteilung 6, which was also known as the
Jasta Chanak Kale—Turkei as early as late 1915 or early 1916. His first aerial victory came on 7 January 1916, when he downed a
Farman bomber over
El Sedd-ul-Bahr. The next day, he downed a
Royal Naval Air Service Voisin III LAS in the vicinity of
Cape Helles. On 4 February 1916, his victory was over a reconnaissance two-seater at
Baba-Tepe, off
Imbros. ==Post World War I ==