Complex sentence: He was promoted to Brigadier General and served as Chief of the Philippines Constabulary between 1907-1913 supporting America's colonial government during a period where violent rebellion to American rule still smoldered in the Philippines.
Split into simpler sentences: He was promoted to Brigadier General and served as Chief of the Philippines Constabulary between 1907 to 1913. Bandholtz supported America's colonial government during a period where violent rebellion to American rule still smoldered in the Philippines.