There are varied techniques of warfare employed in the battlefield and its up to the military tacticians to gauge their effectiveness. One tactic that has been used in past wars to devastating effect is the use of sustained attacks with waves upon waves of infantry and support units attacking and then tactically retreating and rotating to maintain a continuous thrust on the enemy frontline. It has been used notably by the defunct LTTE of Sri Lanka with awesome success. Any thoughts about its applicability in modern warfare?