One of the things that comes to mind here is, as noted, that by leaving your enemies no way to escape or retreat, either physically or psychologically, they are thus encouraged to fight all the harder, even to the last. The battles for Fleury is a stark, but accurate example as were the battles for Stalingrad, etc. Commanders should be wary of pinching too tight unless they really desire annihilation of enemy and possibly friendly forces.
One of the things that comes to mind here is, as noted, that by leaving your enemies no way to escape or retreat, either physically or psychologically, they are thus encouraged to fight all the harder, even to the last. The battles for Fleury is a stark, but accurate example as were the battles for Stalingrad, etc. Commanders should be wary of pinching too tight unless they really desire annihilation of enemy and possibly friendly forces.