次の英文を訳して下さい。
At first he assumed they were some of his own men retiring from the outer posts, but when they reached the wire and began to cut it, he at once gave the order to open rapid fire.
The German battalions forming the centre of the attacking force made a considerable advance circling over the Vale position and across Abu Tellul; establishing a post on Abu Tellul East and then pushing on to eastern side; to The Bluff where they occupied a post with their backs to Kh al Beiyudak. This move cut off all the Light Horse posts at Vyse and on Mussallabeh as well as those on The Bluff and Abu Tellul East, all were without communication to regimental or brigade headquarters. Despite being isolated, heavily attacked and in a number of cases surrounded, they held their ground. They were able to successfully defend their sangars and posts from whatever direction the attack came. Only the troop at Vale and Maskera posts were forced to retire, while one trench on Mussallabeh was captured for a short period before being retaken, and one sangar on Abu Tellul East held by a troop of the 2nd Light Horse Regiment was captured after all the garrison was killed or wounded.
The Germans found themselves caught in numerous cross fires from the front, flank and rear from the mutually-supporting defensive positions, while the Ottoman forces deployed on their left and right flanks were unable to strongly support the German attack. On the left of the main attack the Ottoman 32nd Regiment made a frontal attack on Mussallabeh and captured a post, which was retaken by the defenders shortly after. Three attempts were made by the left of the attacking force on Mussallabeh, but were driven back each time with heavy loss by well placed machine-gun fire leaving about 200 dead. The whole position was completely restored and 380 German and about 200 Ottoman prisoners were sent back to headquarters. On the right flank, Ottoman units from the Ottoman 58th Regiment climbed a cliff to attack View post but a sentry shot the leaders; one of whom must have been carrying incendiary bombs as he burst into flames. By the light of this human torch the remaining would-be attackers were shot, and as a result the remaining Ottoman soldiers at the bottom of the cliff did not make another attack. Regardless, the attack by the Ottoman 163rd Regiment on Vaux post continued.
Reinforcements
When it was found that the Germans had advanced between the 2nd and 3rd Light Horse Regiments and reached the centre of the advanced Light Horse position, the reserve; the 1st Light Horse Regiment launched a counter-attack at 04:30.
補足
解答ありがとうございます！ １のmight beの部分はどういうふうに解釈すればいいですか？