He had taken part in the Chinese war, was present when the French and British allies entered Peking, and had a share in the sacking of the Summer Palace. He returned to France laden with a rich booty, including precious objects of artistic value, which he boldly exhibited for sale in Paris. This was against all military traditions, and in consequence Colonel Dupin's connection with the army was severed. Time had elapsed since this episode, however, and against Maximilian's expressed wishes he had been sent to Mexico by Napoleon himself to take command of the contre-guerilla formed for the defense of the coast region against the depredations of the Mexican bands. It was a relentless warfare, in which the vindictiveness of the Mexicans met with cruel reprisals. The most exaggerated stories were told of the brutality of the French commander, who, in order to intimidate the inhabitants, always in league with the guerrillas then infesting the region, treated them as accomplices whenever outbreaks occurred causing loss of life and property. This treatment, if it insured the submission of the people, was not likely to engender loyalty. Moreover, it earned for Colonel Dupin the title of "Tigre," of which, strange as it may appear, he seemed, I thought, rather proud. The French army, with the marshal, made its final exit in state from the capital on February 5. At the last, and in order to insure their own safety, the French had surrendered the points held by them directly to the Liberal leaders. Thanks to this prudent but unchivalrous policy,* the retreat of the army was as uneventful as had been the movement of concentration. The Liberal forces offered no opposition, and their guerrillas did not even harass the rear-guard of the retreating French. Several thousand men, mainly from the foreign legion, however, deserted. It is said that the marshal claimed them, but General Marquez replied that if he wanted them he might come and fetch them. * Commandant Billaud was censured by his superior officers for having, in his retreat from Mexico to Puebla, beaten back a body of Liberal troops who had taken possession of the town of Chalco. See D'Hericault, loc. cit., p. 41. On March 3 the marshal arrived in Vera Cruz with his last detachment, having lingered on the way, in the hope that the misguided Emperor might reconsider his decision and still be induced to join him. Orizaba and Cordoba were already in the hands of the Liberals, and all communication with the capital had virtually been cut off. The Commander-in-chief had not even heard of what had taken place since his departure. Letters from members of the marshal's staff, received after we sailed from Vera Cruz, convey a graphic impression of the last days of the intervention. From one under date of February 28, 1867, I quote the following passage: