In October 1880, Frederick joined the
Prussian Army as a soldier in the 1st Regiment of Foot Guards (
1. Garde-Regiment zu Fuß) Potsdam. After his marriage in 1885, he was transferred to the 5th Baden Infantry Regiment No. 113 (
5. Badisches Infanterie-Regiment Nr. 113) in
Freiburg im Breisgau. He took command of the regiment on 22 March 1889. The regiment's barracks were later named after him as the
Erbgroßherzog-Friedrich-Kaserne. Friedrich served in Berlin from 1891 to 1893 as commander of the 4th Guards Infantry Brigade. On 11 April 1893, he was named commander of the
29th Division in Freiburg. After leaving active military service, Frederick was promoted to
Generaloberst (Colonel General) with the rank of
Generalfeldmarschall (Field Marshal). On 7 October 1907, he succeeded his father in the largely ceremonial position of
Generalinpekteur (General Inspector) of the
V Army Inspectorate in Karlsruhe. On mobilization at the end of July 1914, the V Army Inspectorate formed the core of the
7th Army, but command was passed to
Generaloberst Josias von Heeringen, and for health reasons Grand Duke Frederick II was unable to serve again during the First World War. Friedrich held the following ranks during his military career: in 1908 • 1875 :
Sekondelieutenant (
Leutnant) • 1881 :
Premierlieutenant (
Oberleutnant) • 1882 :
Hauptmann • 1884 :
Major • 1889 :
Oberst • 1891 :
Generalmajor • 1893 :
Generalleutnant • 1897 :
General der Infanterie • 1905 :
Generaloberst with the rank of Generalfeldmarschall ==Death==