In 1946, already 33 years old, he managed to be vice-champion of France, before becoming vice-world champion in 1947 in Lisbon , behind the young Oriola, the two men then obtaining the world title of foil by team.

Wine merchant of his state for the Adet cognac , he comes to 36, after a preparation in June to the Joinville battalion , to participate in the Olympiad organized in London in 1948 to align with the sword, .. but the circumstances make it finally retained for the foil.

He will start with two gold medals , winning all seven events in the tournament, setting a record total of 24-1, and beating the 19-year- old Christian d'Oriola in the individual final.

Because of his job, Buhan sent for the team final a box of bottles of red which he had guessed the interest ... gold result at the key toJacques Lataste , André Bonin , Adrien Rommel , René Bougnol , d'Oriola and himself 1 .

Father of three sons, Jehan Buhan was also a hunting enthusiast woodcock and pheasant in the Gironde moors, as well as trout fishing -in mouche- in the Pyrenean streams 3 .