The 96th Infantry Regiment was initially raised on 1 November 1745 by prince William of Nassau-Saarbruck, who had already also raised and paid for a cavalry regiment.
(A 21st Light Infantry Regiment - initially known as a battalion then a demi-brigade - was raised on 21 August 1792 and disbanded in 1814.)
The 21st Light Infantry Regiment was initially raised on 6 September 1815 as the 'légion royale étrangère' (royal foreign legion), changing its name in 1816 to the légion de Hohenlohe then the régiment de Hohenlohe before being disbanded on 5 January 1831 and replaced with the 21st Light Infantry Regiment.
Guillaume Apollinaire was fighting in it as a sous-lieutenant when he was wounded in 1915.
This article about a specific French military unit is a stub.