Yesterday, I received a Battle of Okehazama map from the Kajino family and from the Okehazama Battlefield Preservation Society. As you can see, the map is in Japanese. That being said, the map has provided Nobunaga and Yoshimoto's route to the battlefield. This map is useful in my opinion. The legend on the top right hand corner provides everything you need to understand the battle. Again, many thanks to the Kajino family and the Okehazama Preservation Society.