Quote by Hasso von Manstein
"The concentration of effort at the crucial moment is the secret of success."
More from Hasso von Manstein
"The task of the general is to win wars, not battles."
"In war, the moral is half; only the other half is numbers."
"Victory is not final, defeat is not fatal."
"The art of war is simple enough. Find out where your enemy is. Get at him as soon as you can. Strike him as hard as you can, and keep moving on."