Lancelle was descended from a French
Huguenot family that fled persecution in Catholic France and resettled in Germany in the seventeenth century. He was born in the
Rhine Province, the son of a
Royal Prussian Army officer who had fought in the
Austro-Prussian War and the
Franco-Prussian War. After earning his
Abitur, Lancelle joined the
Imperial German Navy as a
midshipman on 1 April 1905. In December of the same year, he transferred to the Royal Prussian Army as a
Fahnenjunker (officer cadet) with the 43rd (
Kleve) Field Artillery Regiment, headquartered in
Wesel. He was commissioned as a
Leutnant on 27 January 1907, was attached to the (artillery school) at
Jüterbog in March 1912 and was promoted to
Oberleutnant on 8 July 1914. At the outbreak of the
First World War, Lancelle was attached to the 6th Guards Field Artillery Regiment as a
platoon leader in the 5th and then the 2nd
battery. He then advanced to the command of the 2nd battery in October 1914. He was promoted to
Hauptmann on 2 April 1915, was twice wounded and moved to the
eastern front in December 1915 as a
battalion commander with the 5th Foot Guards Field Artillery Regiment. He returned to the
western front as an artillery staff officer with the
1st Army from April 1917 to June 1918. He then returned to the role of battalion commander with the
2nd Guards Field Artillery Regiment until the end of the war. He distinguished himself several times, receiving both classes of the
Iron Cross, the
Knight's Cross of the Royal House Order of Hohenzollern with Swords and, on 9 October 1918, the highest Prussian award for bravery, the
Pour le Mérite. After the
Armistice of 11 November 1918, he returned to Germany and was involved in suppressing the
Munich Soviet Republic in May 1919. He transferred to the provisional
Reichswehr in July 1919. He was initially appointed as commander of the 3rd battery in the 26th
Reichswehr Artillery Regiment and transferred a month later to the training regiment at the field artillery school. He also became involved with the
Freikorps units fighting in
Upper Silesia. Refusing to swear allegiance to the
Weimar Republic, he was placed on leave and then was discharged from military service on 31 March 1920 with the rank of
brevet Major. He then obtained civilian employment as head of personnel at a celluloid factory at
Eilenburg in
Saxony. == Nazi Party and SA career ==