Civil War General William Tecumseh Sherman gained everlasting fame when he said “War is Hell.”
The definition holds true, but one might also add that Afghanistan is Hell. Even after Alexander the Great defeated the Persian forces in six month’s time it took three years, from 330 BC to 327 BC, to get some measure of control over Afghanistan. For the Soviet Union, the war in Afghanistan dragged on for ten years (1979 to 1989) and led to its collapse.