The Eagle and the Wolf (1968)

The Yakuza in the Meiji era of Japan fight each other over territory and business to be awarded the contract to build the train tracks. There is a race to see which can finish construction earlier and the winner may be awarded with even more business. A bomb is detonated and the main character is rendered deaf. Members of the group affected have lost much as well. In the meantime, the deaf man believes someone in the group has betrayed him.