“War means fighting. The business of the soldier is to fight. Armies are not called out to dig trenches, to throw up breastworks, to live in camps, but to find the enemy and strike him; to invade his country, and do him all possible damage in the shortest possible time. This will involve great destruction of life and property while it lasts; but such a war will of necessity be of brief continuance, and so would be an economy of life and property in the end. To move swiftly, strike vigorously, and secure all the fruits of victory is the secret of successful war.”

As quoted in Stonewall Jackson and the American Civil War (1904) by George Francis Robert Henderson http://www.gutenberg.org/etext/12233, Ch. 25 : The Soldier and the Man, p. 481
Context: War means fighting. The business of the soldier is to fight. Armies are not called out to dig trenches, to throw up breastworks, to live in camps, but to find the enemy and strike him; to invade his country, and do him all possible damage in the shortest possible time. This will involve great destruction of life and property while it lasts; but such a war will of necessity be of brief continuance, and so would be an economy of life and property in the end. To move swiftly, strike vigorously, and secure all the fruits of victory is the secret of successful war.

Statement to John Hill Brinton, at the start of his Tennessee River Campaign, early 1862, as quoted in Personal Memoirs of John H. Brinton, Major and Surgeon U.S.V., 1861-1865 (1914) by John Hill Brinton, p. 239.
1860s

Employment of Naval Forces (1948)
Context: The basic objectives and principles of war do not change.
The final objective in war is the destruction of the enemy's capacity and will to fight, and thereby force him to accept the imposition of the victor's will. This submission has been accomplished in the past by pressure in and from each of the elements of land and sea, and during World War I and II, in and from the air as well. The optimum of pressure is exerted through that absolute control obtained by actual physical occupation. This optimum is obtainable only on land where physical occupation can be consolidated and maintained.

To Otto von Bismarck in June 1878, as quoted in Around the World with General Grant http://www.granthomepage.com/grantslavery.htm (1879), by John Russell Young, The American News Company, New York, vol. 7, p. 416.
1870s, Around the World with General Grant (1879)

To Otto von Bismarck in June 1878, as quoted in Around the World with General Grant http://www.granthomepage.com/grantslavery.htm (1879), by John Russell Young, The American News Company, New York, vol. 7, p. 416
1870s, Around the World with General Grant (1879)

a Defensive war I think a righteous war to Defend my life & property & that of my family, in my own opinion, is right & justifiable in the sight of God.
An offensive war, I believe to be wrong and would therefore have nothing to do with it, having no right to meddle with another man's property, his ox or his ass, his man servant or his maid servant or anything that is his. Neither does he have a right to meddle with anything that is mine, if he does I have a right to defend it by force.
Letter to a Quaker (1798)

Homage to Catalonia (1938)

Source: Never Again: Securing America and Restoring Justice (2006), p. 181