Complex sentence: By late October 1918, he could see that ultimate defeat for the Imperial forces was inevitable and he had drawn up plans for an orderly troop withdrawal in the event of an armistice so as to prevent unnecessary further bloodshed.
Split into simpler sentences: By late October 1918, Arz could see that ultimate defeat for the Imperial forces was inevitable. He had drawn up plans for an orderly troop withdrawal in the event of an armistice, so as to prevent unnecessary further bloodshed.