Liddell Hart stressed movement, flexibilty, surprise. He saw that in most military campaigns dislocation of the enemy's psychological and physical balance is prelude to victory. This dislocation results from a strategic indirect approach. Reflect for a moment on the results of direct confrontation (trench war in WW I) versus indirect dislocation (Blitzkreig in WW II). Liddell Hart is also tonic for business and political planning: just change the vocabulary and his concepts fit.
"The most important book by one of the outstanding military authorities of our time." (Library Journal)