On July 3rd 1944, on the orders of the Poppi CLN, a patrol of five partisans from the I and II Company of the III Btg. XIII Brigata “Pio Borri” left their base in Casa Magone in a Fiat 1100 on an important mission to pick up equipment in Arezzo. Around 2 a.m. the car was surprised at Terrossola by the II Battalion of the 3rd Brandenburg Regiment. All the members were arrested and taken to Castel Focognano. Four of them were hanged at 3 p.m. the same day from the four mulberry trees adorning the road into the village. The fifth “rebel”, a Russian named Stefano, a deserter from the Wehrmacht, was transferred by the Germans to Romagna and shot. It should be remembered that numerous partisans from the two companies affected by this dramatic event went to Castel Focognano to attempt a rescue. However, they were forced to witness the execution of their comrades without being able to intervene in any way due to the overwhelming numbers of the enemy (equipped, among other things, with armoured vehicles). Piero Pieri, a partisan of the 2nd Company wounded in the previous days, was forced to attend the execution as a warning. He was captured while still in hospital and dragged before the improvised gallows.