Career
Augustin-Joseph de Mailly was marquis d"Haucourt and baron of Saint-Amand. At first a musketeer (1726), he served in the gendarmerie (1733–1764) before rising rapidly through the ranks – brigadier on 20 February 1743, maréchal de camp on 1 May 1745, lieutenant-général on 10 May 1748, inspector general of cavalry and dragoons on 21 May 1749, and finally director-general of camps and armies. Made a chevalier du Saint-Esprit on 26 May 1776, he was made marshal of France on 13 June 1783 and due to his age was able to be governor of Abbeville, sénéchal and Grand bailli of Ponthieu not far from his lands and château.
However, this Mailly, who fought in many battles of the wars of Louis XV, received from Louis XVI, in 1790, command of one of the four armies decreed by the National Assembly (14th and 15th military divisions).
This was a difficult task and he resigned on 22 June, when he learned of the king"s flight to Varennes. On 10 August 1792, despite his old age, he fought on the side of the threatened French monarchy.
Escaping the carnage that followed the capture of the palais des Tuileries and the September massacres, he was arrested in his château, then guillotined in 1794 at Arras, aged 87 – on the scaffold he cried "I remain faithful to my king, as my ancestors have always been". The 4 Mailly sisters – mistresses of Louis XV
Beginnings of his military career
Governor of Roussillon
= Le Cocu du Roi = Perpignan = Military academy (1751) = The university of Perpignan (1760–1763) = Portuguese-Vendres = The major quarrel (1743) War again
10 August 1792
Arrest and execution
On the 25th of March 1794, Joseph de Mailly was executed by guillotine, at the time of his execution he was the oldest person to be executed.