The Prussian military theorist who is widely acknowledged as the most important of the major strategic theorists. Even though he's been dead for over a century and a half, he remains the most frequently cited, the most controversial, and in many respects the most modern. His most notable work, Vom Kriege (On War), was unfinished at his death.
"To achieve victory we must mass our forces at the hub of all power and movement, the enemy's centre of gravity." - Carl von Clausewitz