What was the name of the dog that played a part in the French Revolutionary and Napoleonic Wars?

Moustache, sometimes abbreviated to Mous, (September 1799 – 11 March 1812) was a barbet who is reputed to have played a part in the French Revolutionary and Napoleonic Wars. His story is recounted in many publications but may be partly fictionalised.

Moustache is said to have been born in Falaise, Normandy, France, in 1799 and to have joined a grenadier regiment at Caen. He followed the regiment through the Italian Campaign of the Revolutionary Wars and is said to have alerted the regiment to a surprise night attack by Austrian forces. He is reported to have been present at the Battle of Marengo, during which he lost an ear, and with a cuirassier regiment at the Battle of Austerlitz.

At Austerlitz Moustache was apparently responsible for the discovery of an Austrian spy, and the recovery of the regiment's standard from the Austrians. As a result of wounds taken at Austerlitz Moustache had a leg amputated and was reportedly rewarded with a medal by Marshal Jean Lannes.

He is later said to have followed a unit of dragoons to Spain where he fought in several actions of the Peninsular War. Seeing action in the Sierra Morena and later, with a gunboat unit, at the Battle of Badajoz, where he was killed by a cannonball.