A masterpiece of national and military strategy, General Clausewitz's thoughts, "On War" are still studied today by military and political leaders throughout the world. You can find quotes from Clausewitz in countless articles and book on strategy up to the present time since his thoughts transcend the advances of technology and are applicable across the epochs. 

Read Clausewitz's "On War" to gain insight to the application of military forces in the advancement of a nation's grand strategy.