 On Saturday 3 August 1670, Louvois went to Pignerol with De Vauban, his assistant Mesgrigny and King's doctor Antoine Vallot.Marcel Pagnol emphasises the urgent nature of this ministerial journey, initially planned for 20 September, moved forward to 15 August, and finally taking place on 8 August (the journey from Paris to Briançon took five days and five nights in a mail-coach) in the delicate European context of the Treaty of Dover.On his return to Paris on 27 August, on the orders of the King Louvois undertook complete renewal of the garrison of Pignerol, involving the replacement of the regiment, the officers (Marcel Pagnol estimates their number to be between 30 and 40) and three governors