Severe Fighting in the Terwân Pass. Gallant Charge of the 101st Sikhs. List Of Officers Killed, Wounded, and Missing.--The telegram which reached Simla a few days ago reporting a severe skirmish in the Terwân has now been supplemented by details. It appears that a small force consisting of some companies of the 101st Sikhs, the 24th Goorkhas, the 207th British Infantry, and a mule battery, were sent by the old route over the Terwân Pass in order to report on its practical use. No opposition was expected, as the tribes in the vicinity had come in and were believed to be friendly. About the middle of the Pass, which proved to be far more difficult than was anticipated, a halt had to be made for the purpose of repairing a bridge which spanned an almost impassable torrent. The road, which up to this point had followed the right bank of the river, now crossed by this bridge to the left in order to avoid some precipitous cliffs. Here it became evident that the little force had fallen into an ambuscade, for firing immediately commenced from the numerous points of vantage on either side. The Goorkhas, charging up the right bank, succeeded in dislodging most of the enemy and driving them to a safe distance. From the advantage thus gained they then opened fire on the left bank, managing to disperse some of the lower pickets. Owing, however, to the rocky and almost precipitous nature of the ground the upper ones were completely protected, and continued to pour a relentless fire on our troops, who were, for the most part, young soldiers. During the trying inaction necessary until the bridge could be repaired,--which was done with praiseworthy rapidity despite the heavy fire--Major Philip Marsden, of the 101st Sikhs, volunteered to attempt the passage of the torrent with the object of doing for the left bank what the Goorkhas had done for the right.