During the American Civil War a military campaign known as the Sherman's March to the Sea was led by the Union Major General William Tecumseh Sherman who used the military strategy called "scorched earth". This strategy aims to destroy whatever is useful to the enemy, like telegraph poles, railroads, factories, infrastructure, etc. in order to damage economically to the opponent. This engraving is a good example of this strategy, so the right answer is option D, bringing destruction to the Confederate infrastructure .