Background
Michaelis was born in Bischofsburg, East Prussia to a civil engineer, he graduated from high school with a first.
Michaelis was born in Bischofsburg, East Prussia to a civil engineer, he graduated from high school with a first.
He entered the Imperial German Navy as a Seeoffizieranwärter in April 1889 and was promoted to Unterleutnant zur See (equivalent to ensign) in 1892. He served at the rank of Unterleutnant zur See from 1900 to 1902 as a deck officer and commander with the 1st Torpedo Boat Division in Kiel. He also attended Kiel"s Naval Academy from 1900 to 1902, leading to service with the Reichsmarineamt (Royal Military Academy) as a head of department and with the Admiralty Staff.
He then served as first officer of a capital ship then as staff officer to the admiral of a squadron.
From 4 February 1915 through 28 January 1916 he served as chief of staff to the Commander of the High Seas Fleet, Admiral Hugo von Pohl.