Complex sentence: During major campaigns against the Turks, Hunyadi, as a comite of Timis (1440), took steps to organize the city's defense system strengthening the city with trenches, ramparts and palisades.
Split into simpler sentences: During major campaigns against the Turks, Hunyadi, as a comite of Timis (1440), took steps to organize the city's defense system. He strengthened the city with trenches, ramparts and palisades.