Grewal bhaji , here are some lines from other thread which i didnot posted and link to that thread
Brar, then decided on a change of plan. He ordered to occupy the roof tops of the clock towers as well as all the rooms along the parikarma. Army commandos rushed in from main clock tower entrance, their objective being to neutralize fire from Akal Takht in North. They ran into trouble as soon as they went down the steps, automatic gunfire hit them from both sides of stairs and more then 40 commandos lost their lives in less then five minutes, amazingly only two Bhindrenwale supporters were firing at them. Next batch of commandos were able to run down the stairs and turn right but here again, automatic gun fire from Akal Takht as well as old towers and water tank hit them. By this time Soldiers from Bihar regiment had cordoned off the whole Golden Temple complex, but not very effectively. Madras regiment was trying to enter through the Eastern gate and had reached many difficulties. While Kumaonis from North close to Langar were trying desperately without much success. So General Brar requested tanks to be brought in to Golden Temple, but he was give armored personnel carrier. Which was blown up by rocket launcher as soon as it had crossed Baba Deep Singh's Samadh.
https://www.unp.me/f16/blue-star-in-sikh-history-66725/