Complex sentence: Two years later, on April 6,1917 when the U.S. declared war on Germany, forty-year-old Walter Maytham and sixteen-year-old Rowland Brown rushed to enlist.
Split into simpler sentences: Two years later, on April 6,1917 the U.S. declared war on Germany. Both forty-year-old Walter Maytham and sixteen-year-old Rowland Brown rushed to enlist.