The report has a few errors and inconsistencies. I will not correct them line after line, but will describe the then situation at the border.
1) Pyrduah was a part of east Pakistan. But, during the 1971 war of independence India took away this land. GoB and BDR protested it with India, and subsequently there was an agreement that until the matter is settled, it will remain with India. However, India may not construct any permanent structures, such as road, bridge, watch tower there.
2) In the beginning of 2001 BDR watched India building a road that leads to the BSF camp. BSF did not heed to BDR appeal and said the decision was made at the upper political level, and, therefore, BD should engage the GoI to settle the issue.
3) On the night of (probably) 13th March a few BDR troops entered the BSF camp, captured the troops and declared the area a part of Bangladesh.
4) GoI and and the Indian public became furious at that. SHW was under Indian pressure to vacate the land and release the BSF troops. 3000 to 4000 BSF and IA troops amassed at that border within a few hours after the day break. BDR also assembled some 300 troops of its own to face IA while political dialogue was continuing. SHW agreed to Indian proposal that the area be vacated, BSF troops be released and the issue be settled at the political level. BDR released the BSF troops and vacated Pyrduah.
5) Every one thought the matter was settled. But, IA took the matter seriously. It decided to capture the 13 BDR troops at Baraibari border, far away from Pyrduah, in order to take revenge of Pyrduah. IA amassed a total of 800 troops out of which 400 crossed international border to attack the BDR BoP at the dead of dark night of (probably) 16th April.
6) A teenage boy, ordered by his father, was in the field to check if the level of irrigation water was sufficient or not. They were planning to take the pump macine in the next morning.
7) This is how this young boy saw the movement of IA troops at far. He ran under the shade of trees and informed about the matter to his elders, who ran to the Border Outpost and informed the BDR about the IA intrusion.
8) The CO with the approval of his 12 colleagues decided not to vacate the land, but fight the agressors. They prayed a quick one or two Raqat Namaz, asked for forgiveness to Allah, embraced each other knowing it was their last meet, no chance they would comeback alive after the battle.
9) So, the battle was between valiant 13 BDR and 400 IA troops. The BDR CO ordered his troops to scatter in the left and right. When the IA troops were about 80m away, he ordered firing. 97 IA troops were killed in that battle, but the retreating IA troops took most of the bodies away. !6 bodies remained in the Bangladesh land. BDR troops made a new history.