Sir Winston Churchill

Never, never, never believe any war will be smooth and easy or that anyone who embarks on that strange voyage can measure the tides and hurricanes he will encounter. The statesman who yields to war fever must realize that once the signal is given, he is no longer the master of policy but the slave of unforeseeable and uncontrollable events… incompetent or arrogant commanders, untrustworthy allies, hostile neutrals, malignant fortune, ugly surprise, awful miscalculations.—Sir Winston Churchill