(Photo courtesy of Gareth Collins)
Admiral Dr.phil.h.c. Otto Groos
Born: 17 Jul 1882 in Jülich
Died: 29 May 1970 in Bremen
Honorary Doctorate In Philosophy: 20 Jun 1925 at the Friedrich-Wilhelms-University in Bonn
Promotions:
Fähnrich zur See (19 Apr 1901); Leutnant zur See (27 Sep 1903); Oberleutnant zur See (21 Mar 1905); Kapitänleutnant (22 Mar 1910); Korvettenkapitän (28 Apr 1918); Fregattenkapitän (01 Aug 1924); Kapitän zur See (01 Dec 1926); Konteradmiral (01 Dec 1930); Vizeadmiral (01 Apr 1934); Admiral z.V. (01 Sep 1941)
Career:
Entered the Navy as a Seekadett and Attended Basic-Training (07 Apr 1900-22 May 1900)
On Board the School-Ships ‘Gneisenau’ and ‘Stein’ (23 May 1900-14 Apr 1901)
Naval-School and Special-Briefings (15 Apr 1901-27 Sep 1902)
On Board the Liner ‘Kaiser Karl der Große’ (08 Oct 1902-30 Sep 1903)
Company-Officer with the II. Torpedo-Battalion (01 Oct 1903-30 Sep 1905)
At the same time, Watch-Officer on the Torpedo-Boat ‘S 117’ (15 Oct 1903-14 Dec 1903)
At the same time, Watch-Officer on the Torpedo-Boat ‘S 105’ (13 Aug 1904-04 Nov 1904)
At the same time, Watch-Officer on the Torpedo-Boat ‘G 108’ (06 Nov 1904-22 Dec 1904)
At the same time, Watch-Officer on the Torpedo-Boat ‘S 119’ (04 Apr 1905-15 Sep 1905)
Company-Officer with the II. Sailor-Division (01 Oct 1905-09 May 1906)
Departed to East Asia (10 May 1906-26 Jun 1906)
Watch-Officer on the Torpedo-Boat ‘S 90’ (27 Jun 1906-08 Jan 1908)
Returned Home from Tsingtau and Placed to the Disposal of the II. Naval-Inspection (09 Jan 1908-18 May 1908)
Adjutant of the 2nd Battalion of the II. Shipyard-Division (19 May 1908-30 Sep 1908)
Watch-Officer on the Liner ‘Zähringen’ (01 Oct 1908-20 Sep 1910)
Detached to the Nautical Department of the Reichsmarineamt (21 Sep 1910-31 Mar 1911)
First Officer on the Survey-Ship ‘Hyäne’ (01 Apr 1911-22 Aug 1911)
Leader of the Crew-Cadre ‘Hyäne’ (23 Aug 1911-30 Sep 1911)
Company-Leader in the I. Sailor-Division (01 Oct 1911-30 Sep 1912)
I. Course at the Naval-Academy (01 Oct 1912-30 Jun 1913)
Granted Leave (01 Jul 1913-30 Sep 1913)
II. Course at the Naval-Academy (01 Oct 1913-28 Jun 1914)
Navigations-Officer on the Heavy Cruiser ‘Hansa’ (29 Jun 1914-04 Aug 1914)
Navigations-Officer on the Heavy Cruiser ‘Prinz Heinrich’ (08 Aug 1914-15 Oct 1914)
Navigations-Officer on the Heavy Cruiser ‘Von Der Tann’ (16 Oct 1914-22 Jun 1917)
Admiral-Staff-Officer with the Staff of the IV. Reconnaissance-Group (23 Jun 1917-05 Nov 1918)
In the Signals-Department in the Admiral-Staff of the Navy (06 Nov 1918-28 Dec 1918)
In the War Science Department (Naval Archives) of the Admiral-Staff/Admiralty/Naval-Command (29 Dec 1918-09 Jan 1926)
Commandant of the Cruiser ‘Hamburg’ (10 Jan 1926-30 Jun 1927)
Placed to the Disposal of the Chief of Naval Command (01 Jul 1927-05 Oct 1927)
Military Instructor at the Subsidiary Leadership Course (06 Oct 1927-31 Mar 1929)
Leader of the Subsidiary Leadership Course (01 Apr 1929-08 Apr 1931)
Acting Chief of Staff of the Naval-Station of the Baltic Sea (09 Apr 1931-25 Sep 1931)
Chief of the Naval-Command-Office, Naval Command (28 Sep 1931-28 Sep 1934)
Retired (28 Sep 1934)
Placed to the Disposal of the Kriegsmarine (22 Mar 1939-25 Jun 1940)
Chief of Special-Staff War Economics and Economic Combat Measures, OKW and at the same time, Leader of the Military Commission of the Tripartite (25 Jun 1940-30 Jun 1944)
Placed to the Disposal of the Kriegsmarine (30 Jun 1944-16 Oct 1944)
Chief of Special-Staff War Economics and Economic Combat Measures, OKW (16 Oct 1944-03 May 1945)
In Captivity (03 May 1945-27 Apr 1946)
Retired (27 Apr 1946)

Decorations & Awards:
- RK des Kgl. Preuss. Hausordens von Hohenzollern mit Schwertern
- 1914 EK I
- 1914 EK II
- Türkischer Eiserner Halbmond
- Kgl. Preuss. Dienstauszeichnungskreuz
- Ehrenkreuz für Frontkämpfer


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