Scapa Flow is the correct spelling.
http://scapaflowwrecks.com/
Winston Churchill was the First Lord of the Admiralty during most of WWI but was replaced when Herbert Asquith was replaced by David Lloyd George in 1916. Lloyd George replaced him with Kitchener who ordered the troops to Gallipoli to save Churchill’s failed naval mission that was intended to pass through the Dardanelles to take Constantinople in order to take Turkey out of the war. After Churchill was displaced he went to France and fought in the trenches.