Most of the detainees were captured MISC@1 and MISC@2 military personnel , On August NUMBER@1 , NUMBER@2 at least NUMBER@3 -LRB- some sources suggest over NUMBER@4 -RRB- MISC@1 POWs attempted a mass breakout from the camp , in perhaps the largest prison escape in world history .

On August NUMBER@1 , NUMBER@2 about NUMBER@3 -LRB- some sources say over NUMBER@4 -RRB- MISC@1 POWs attempted a mass escape from the camp .
