[3] The operation opened with an attack on the German observation post at the Pointe de Bellecombe (2750m), which was reached after a 600m night climb in difficult weather.

After gaining a foothold in the fort on the 5 April, French forces finally captured it after several days of confused fighting at close quarters.

However, an attack against the Fort de la Turra was a failure, and the offensive stalled when the heavy artillery units were withdrawn for the operation against the Authion massif [it].

On the 12 April a perfectly executed counter-attack by the Gebirgsjäger and the troops of the "Folgore" recaptured the fort and evicted the French from the Mont-Cenis plateau.

[2] The failure of Operation Izard had severe consequences for Doyen's force as it persuaded the Americans to withhold further supplies for the offensive.