अयनेषु च सर्वेषु यथाभागमवस्थिता: |
भीष्ममेवाभिरक्षन्तु भवन्त: सर्व एव हि || 11||
ayaneṣhu cha sarveṣhu yathā-bhāgamavasthitāḥ
bhīṣhmamevābhirakṣhantu bhavantaḥ sarva eva hi
ayaneṣhu—at the strategic points; cha—also; sarveṣhu—all; yathā-bhāgam—in respective position; avasthitāḥ—situated; bhīṣhmam—to Grandsire Bheeshma; eva—only; abhirakṣhantu—defend; bhavantaḥ—you; sarve—all; eva hi—even as
Now take your proper places in front of your marshalled troops and protect Bhishma alone.
Bhishma was the most powerful hero well capable of protecting himself. Why should Duryodhana caution others to keep him safe and well-protected? There is a reason for it. The son of Drupada, Sikhandi, was first a eunuch. Bhishma has pledged that he would never face a eunuch in battle. So, if the Pandavas should place Sikhandi at the foremost point of their army, Bhishma would not face it, and so his power would be partially neutralised. Taking advantage of it, the enemies might injure and kill him. Duryodhana knew the secret. So he directs all the leaders of his army to see that Sikhandi is kept out of the way, so that Bhishma would be free to fight at his best. If Bhishma was safe, he would be able to make the most powerful onslaught on the enemy, and be the bulwark of defense for the entire Kaurava army. Knowing this he directed all to protect Bhishma in all possible ways.