General William T Sherman explained that his aim was to relentlessly pursue the confederates and make them fear and dread him in the union army, which wartime strategy is represented by this idea?

This wartime strategy is known as total war. Total war involves targeting not only the enemy's military forces, but also the civilian population and infrastructure in order to weaken the enemy's ability to wage war. By instilling fear and dread in the Confederate forces, General Sherman was employing total war tactics to achieve his military objectives.