 He accepted this position, believing the Japanese's promise to grant independence to Indonesia.But after occupying this position, he was regarded as an accomplice to the invaders by his friends.He was subjected to endless criticism as the Japanese were defeated and surrendered to the Allies, which drove him back to the Minangkabau after the Revolution broke out in 1945, in the meantime also fighting to repel the invaders by joining Indonesian guerrillas to fight against the return of the Dutch in the jungles in Medan.