Complex sentence: Somme's 1916 conclusion would not end the fighting in this area, in 1917 offensive operations would resume in the general vicinity, leading to new casualties and military offensive intend to break through and crush German defensive lines.
Split into simpler sentences: Somme's 1916 conclusion would not end the fighting in this area. In 1917 offensive operations resumed in the general vicinity, leading to new casualties and military offensives intended to break through and crush German defensive lines.