"As the railway had not been destroyed, I thought that possibly the invaders intended to use the line _viâ_ Mid-Calder, and therefore examined the station closely. While engaged in this, one of the Engineers suddenly discovered a wire very carefully concealed along the line, and as we followed it up 500 yards each way, and could find no connection with the instrument at the station office, I at once concluded that it was the enemy's field telegraph, forming means of communication between their headquarters at Airdrie and the division that still remained in the Pentlands.
"Cutting the wire, and attaching the ends to the instrument in the station, I left three Engineers, all expert telegraphists, to tap the wire, and they, with the right half company, under Lieutenant Compton, formed a detached post at this point. I also left the cyclists to convey to me any messages which might be received on the instrument, and then proceeded to Newmains. The place was now a mere heap of smouldering ruins; but, as at Morningside, some of the terrified villagers had returned, and they stated that early in the morning they had seen small detachments of Russian cavalry pass through from Bankle, and proceed north along the Cleland road.
"Leaving the left half company here with the other Engineers and the two cyclists, under Lieutenant Planck, with orders to block the road and railway bridge, I returned to my piquet line. A few minutes later, however, a cyclist rode up with a copy of a message which had been sent from the Russian headquarters on the Pentlands to the Glasgow investing force. The message was in cipher, but, thanks to the information furnished by the spy who was captured near Manchester, we were now aware of some of the codes used by the invaders, and I sent the messenger on to the Colonel at once. One of his staff was able to transcribe it sufficiently to show that some disaster had occurred to the enemy on the Pentlands, for it concluded with an order withdrawing the troops from Glasgow, in order to reinforce the 3rd Army Corps in the fierce battle that was now proceeding. It was also stated in the message that despatches followed, so at once we were all on the alert.
"Almost immediately afterwards news was received over our own telegraph from Carstairs, stating that a terrific battle had been fought along the valleys between Leadburn, Linton, and Dolphinton, in which we had suffered very severely, but we had nevertheless gained a decisive victory, for from dawn until the time of telegraphing it was estimated that no fewer than 12,000 Russians had been killed or wounded.