German colonial empire
Gustav Nachtigal (; born 23 February 1834 – 20 April 1885) was a German military surgeon and explorer of Central and West Africa. He is further known as the German Empire's consul-general for Tunisia and Commissioner for West Africa. His mission as commissioner resulted in Togoland and Kamerun becoming the first colonies of a German colonial empire. The "Gustav-Nachtigal-Medal", awarded by the Berlin Geographical Society, is named after him.