 San Biagio was affected by the consequences of the outbreak of the First world war especially after the Battle of Caporetto in 1917.Then the front line moved to the Piave River and forced the people of the area to exit to the Po Valley while the Austro-Hungarian armed forces bombarded their home territory causing considerable damage.The involvement reached its peak, when in June 1918, the Battle of the Solstice was fought here.