On the 7th September the Battalion made a forced march from Tonquin to Rebais, where there was a German column, but the advance-guard of the Brigade was held up at St. Simeon till dark and the Battalion had to bivouac a couple of miles outside Rebais. The German force withdrew from Rebais on the afternoon of the 7th, and on the 8th the Brigade’s advance continued through Rebais northward in the direction of Boitron, which lay just across the Petit Morin River. Heavy machine-gun fire from some thick woods along the rolling ground, across the river, checked the advance-guard (the 3rd Coldstream) and the two companies of the Irish Guards who supported them. The woods, the river valley, and the village of Boitron were searched by our guns, and on the renewal of the attack the river was crossed and Boitron occupied, the enemy being heavily shelled as he retired. Here the Battalion re-formed and pressed forward in a heavy rainstorm, through a flank attack of machine-guns from woods on the left. These they charged, while a battery of our field-guns fired point-blank into the thickets, and captured a German machine-gun company of six guns (which seemed to them, at the time, a vast number), 3 officers, and 90 rank and file. Here, too, in the confusion of the fighting they came under fire of our own artillery, an experience that was to become familiar to them, and the C.O. ordered the companies to assemble at Ferme le Cas Rouge, a village near by where they bivouacked for the night. They proudly shut up in the farm-yard the first prisoners they had ever taken; told off two servants to wait upon a wounded major; took the parole of the two other officers and invited them to a dinner of chicken and red wine. The Battalion, it will be observed, knew nothing then except the observances of ordinary civilized warfare. 2nd Lieutenant A. Fitzgerald and a draft arrived that day. This small affair of Boitron Wood was the Irish Guards’ share of the immense mixed Battle of the Marne, now raging along all the front. Its result and the capture of the machine-guns cheered them a little.