In the autumn of 1913, he was conscripted into the Austro-Hungarian Army. He was sent to a school for non-commissioned officers and became a sergeant, serving in the 25th Croatian Regiment based in Zagreb. In May 1914, Broz won a silver medal at an army fencing competition in Budapest. At the outbreak of World War I in 1914, he was sent to Ruma, where he was arrested for anti-war propaganda and imprisoned in the Petrovaradin fortress. In January 1915, he was sent to the Eastern Front in Galicia to fight against Russia. He distinguished himself as a capable soldier, becoming the youngest Sergeant Major in the Austro-Hungarian Army. For his bravery in the face of the enemy, he was recommended for the Silver Bravery Medal but was taken prisoner of war before it could be formally presented. On 25 March 1915, while in Bukovina, he was seriously wounded and captured by the Russians.