Navy Order No. 12
2 December 1941
Order to: Yamamoto, C in C, Combined Fleet
1. As of 8 December the Commander-in-Chief of the Combined Fleet will start military operations in accordance with Imperial General Headquarters Navy Order No. 9.
2. Military operations will be launched against the Netherlands at an opportune time after attacking the United States and Great Britain.
(JAPANESE MONOGRAPH NO. 97)