Original sentence: (For a divisional commander to retreat without orders or permission from his superior was unheard-of in the Japanese Army.) Finally on 31 May, he abandoned Naga Village and other positions north of the road, in spite of orders from Mutaguchi to hang on to his position
Edited sentence: (For a divisional commander to retreat without orders or permission from his superior was unheard-of in the Japanese Army).Finally on 31 May, he abandoned Naga Village and other positions north of the road, in spite of orders from Mutaguchi to hang on to his position