The Battle of Jutland was the most important naval battle in World War I.

In WWI, the German fleet was blockaded by the larger Royal Navy. For the most part, it was kept in its base at Wilhelmshaven. The Battle of Jutland happened when the German fleet, lead by Admiral Reinhard Scheer, tried to break out into the open sea. The German fleet consisted of 22 battleships, five battlecruisers, 11 cruisers and 61 torpedo-boats. Scheer also had submarines with torpedos. These he arranged outside the main British bases.

The main British bases were in Scotland: the Orkney and Shetland had a huge base at Scapa Flow, and bases on the mainland were at Cromarty on the Moray Firth and at Rosyth on the north bank of the Firth of Forth.

So, the British fleet steamed south-east from their bases and met the German fleet steaming due north. The battle was fought over a wide area at Jutland Bank west of the Skagerrak between Norway and Denmark.