Complex sentence: He was gratuated at "Liceo Torquato Tasso", and attended to the Sapienza University of Rome until the 1915, when Italy declared war to the Central Empires: in the same year he left his studies to enlist himself in the Italian Royal Army.
Split into simpler sentences: He was gratuated at Liceo Torquato Tasso, and he attended to the Sapienza University of Rome unil 1915, when Italy declared war to the Central Powers. In the same year, he left his studies to enlist himself in the Italian Royal Army.