Sometimes at dusk, sometimes at dawn, when the dim gray light shrouds them from the enemy, commandos of the mainly Muslim Bosnian army launch coordinated attacks on Serb positions. Using their advantage in manpower, the Bosnian troops pick their way around the enemy's heavy tanks and guns, ambushing troops or blasting through sparsely defended encampments.
In the course of two weeks, these new tactics have served the Bosnian government well: for the first time in 31 months of war, they are poking through the overextended lines of the Bosnian Serb army. Government forces have retaken 60 sq. mi. of territory from...