On the 7th March it was clear that the troops in front of them had been replaced by a more cautious and aggressive enemy. So the Battalion turned a couple of their most untenable posts into listening-posts, occupied by night only, and some one suggested that the new artillery which had just come in behind them might put down a creeping barrage for the greater discouragement of snipers. They cleared out a post or two first, in anticipation of stray shots, and lost one man killed and one wounded; but when the barrage arrived it was weak and inaccurate. Guns need time to learn to work in well with their brethren ahead, and the latter are apt to be impatient when they think they are being experimented on. THE GERMAN WITHDRAWAL Not till towards mid-March did the much-written-of German “crack” affect their chilly world. The C.O.’s of the battalions conferred at Brigade Headquarters on the 13th to discuss the eventuality, and in the middle of it the Major-General came in and announced there was good reason to think that the retirement in front of them would begin that night. In which case, so soon as scouts had reported that the enemy trenches were held very lightly or had been abandoned (“But Jerry never abandoned his dam’ machine-guns till we was on top of ’em”), two patrols from each company in the front line, of an officer and twelve men apiece, would go forward on schedule time and occupy. They would be followed by the two front companies, who would make good the enemy’s old front and support lines. With two battalions in the front line to draw from, this made a force of four companies, all of whom were to be under the command of the Senior Lieut.-Colonel in the battalions engaged. He would be known as “O.C. Situation Centre,” and would issue all orders, acting as in command of an advanced guard. _But_ the two reserve companies of the battalions in line would be with the main body of the brigade and would not move without the Brigadier’s direct orders. In other words, no one was to be drawn into anything like a vulgar brawl. And on the 14th March, from a hill near by, a vast fire could be seen far off, which was Péronne a-burning. That same afternoon the enemy began shelling their own front line along the western edge of St. Pierre Vaast Wood. The situation betrayed itself. An officer’s patrol out from the 1st Scots Guards reported the enemy gone from in front. Whereupon the battalions in the line, the 2nd Irish Guards and the 1st Coldstream, moved out cautiously at dusk and established themselves partly in the first of the enemies’ abandoned trenches, with supports, more or less, in our old front line. When their relief came it was a pitch-black night, and the Coldstream had pushed out some patrols into bits of the German trench beyond the chaos of No Man’s Land, who, naturally, did not even themselves know where in France they might be, but had to be discovered and relieved just the same,