The 84th Line Infantry Regiment is an infantry unit of the French Army. It was heir of the Quercy Regiment and the 9th Light Regiment, created in 1684.
At the Battle of Graz in the Austrian Empire on 25 and 26 June 1809, two battalions defended a church cemetery for many hours against thousands of Austrian soldiers. In the end, the regiment broke through and escaped their enemies. For the loss of three officers and 31 men killed, 12 officers and 192 men wounded, and 40 captured, they inflicted an estimated 500 casualties on the Austrians. In honor of the regiment's outstanding bravery on this occasion, the 84th was allowed to add the words UN CONTRE DIX (One Against Ten) on their colors.
(*) These officers became heads of brigade. (**) These officers became heads of division.