La Journee Serbe 25 juin 1916. Anniversaire de la bataille de Kossov. Serbian civilians and military personnel crossing the River Drina in what is now Yugoslavia. King Peter is being transported across the bridge. The Battle of Kossovo was the last battle lost by the Serbians before they were forced to migrate into the Albanian mountains for the winter. Thousands died that winter from the horrible conditions and lack of food. Kossovo was also significant because that is where the Serbians lost an equally important battle in 1389. This day was to benefit the Serbian Relief Fund. Date 1916. La Journee Serbe 25 juin 1916. Anniversaire de la bataille de Kossov. Serbian civilians and military personnel crossing the River Drina in what is now Yugoslavia. King Peter is being transported across the bridge. The Battle of Kossovo was the last battle lost by the Serbians before they were forced to migrate into the Albanian mountains for the winter. Thousands died that winter from the horrible conditions and lack of food. Kossovo was also significant because that is where the Serbians lost an equally important battle in 1389. This day was to benefit the Serbian Relief Fund. Date 1916.