The Army has squeezed the rebels into a small patch of jungle since seizing their last major stronghold Sunday. But they could still mount a messy counterinsurgency.
Humanitarian concerns are mounting as government forces bear down on rebel areas.
The Army seized another key town, Pallai, Thursday, and has squeezed the rebels from north and south.
Amid fierce fighting in recent days, the military says it will soon take the rebel base and, within months, end one of Asia's longest-running conflicts.
Anger at the military's heavy hand and land seizures rattles a year-old calm in the east, a rare success in a 25-year war.