 By March 1313, Henry was back in his stronghold of Pisa, and from here he formally charged Robert of Naples with treason after Robert finally agreed to accept the office of the captain of the Guelph League.By now his patience was at an end, and he ordered that throughout Italy, all the inhabitants of all rebellious cities were to be captured, stripped and hanged for treason.While he loitered in Pisa, waiting for reinforcements from Germany, he attacked Lucca, a traditional enemy of Pisa.