Wilhelmshaven in the context of "Dortmund-Ems canal"

The Kiel mutiny (German: Kieler Matrosenaufstand) was a revolt by sailors of the German High Seas Fleet against the maritime military command in Kiel. The mutiny broke out on 3 November 1918 when some of the ships' crews refused to sail out from Wilhelmshaven for the final battle against the British Grand Fleet that the Admiralty had ordered without the knowledge or approval of the German government. The mutineers, who saw the planned battle as a futile "death voyage", took over Kiel with workers' and soldiers' councils and then helped spread them across Germany. The German Revolution that was triggered by the councils swept aside the Hohenzollern monarchy within a few days, brought about the end of the German Empire and led to the establishment of the Weimar Republic.

The Dortmund–Ems Canal is a 269-kilometre (167 mi) long canal in Germany between the inland port of the city of Dortmund (51°31′30″N 7°26′40″E / 51.52500°N 7.44444°E / 51.52500; 7.44444) and the seaport of Emden. The artificial southern part of the canal ends after 215 kilometres (134 mi) at Herbrum lock near Meppen. The route then takes the river Ems for 45 kilometres (28 mi) to Oldersum lock. From there, the canal continues along a second artificial segment of 9 kilometres (6 mi). This latter section was built because inland ships at the time of the construction of the canal were not built for the open sea, which they would have faced at the Dollart and the entry to the sea port of Emden. It is connected to the Ems-Jade Canal from Emden to Wilhelmshaven.

East Frisia (German: Ost-Friesland; East Frisian Low Saxon: Oost-Freesland) is a collective term for all traditionally Frisian areas in Lower Saxony, Germany, which are primarily located on a peninsula between the Dollart and the Jade Bight. Along with West Frisia and North Frisia, it is one of the most commonly used subdivisions of Frisia.

It is distinct from Ostfriesland – also translated to English as "East Frisia" – which refers to a historic region that occupies the western half of the peninsula (Aurich, Leer, Wittmund and Emden). Besides Ostfriesland, East Frisia includes Landkreis Friesland and Wilhelmshaven (Oldenburger Friesland), and in a broader sense also Saterland, the Butjadingen peninsula (Rüstringen) and Land Wursten.

Friesland is a district (Landkreis) in Lower Saxony, Germany. It is bounded by (from the southeast and clockwise) the districts of Wesermarsch, Ammerland, Leer and Wittmund, and by the North Sea. The city of Wilhelmshaven is enclosed by—but not part of—the district.