Complex sentence: This angered the three remaining regents and plans were made on all sides for war.it was also the last battle of one of the most loyal and powerful retainer of ieyasu Tadakastsu Honda.
Split into simpler sentences: This angered the three remaining regents and plans were made on all sides for war. It was also the last battle of one of the most loyal and powerful retainer of Ieyasu, Tadakastsu Honda.