Myanmar's military conscription plan reveals the heavy toll that months of incessant fighting against rebels have had on its troops and the struggles the generals are facing to replenish their ranks, analysts, diplomats and a defector said.

The plan, which was announced this week, comes after the junta lost control of swathes of territory along a front line that stretches from the highlands bordering China to the coastline near Bangladesh, some of it in a coordinated offensive by rebel groups that started in October, dubbed Operation 1027.

"The military is clearly facing significant manpower shortages, which is why it is introducing a draft for the first time in its history," said Richard Horsey, the Crisis Group's senior Myanmar adviser.