untouched roads which he had kept in perfect order, to this very end; and left us to follow through bottomless valleys of desolation.
The frost broke on the third week of February, and the last state of the ground was worse even than it had been throughout the rainy autumn. Trenches caved in bodily; dumps sank where they were being piled; the dirt and the buttresses of overhead shelters flaked and fell away in lumps; duckboards went under by furlongs at a time; tanks were immobilised five feet deep and the very bellies of the field-guns gouged into the mud. Only our airmen could see anything beyond or outside the present extreme discomfort, but the mists that came punctually with the thaws helped to baffle even their eyes.
On the 24th February the enemy had evacuated his positions in front of Pys, Miraumont, and Serre; next day his first system of defence, from Gueudecourt to west of Serre, running through half-a-dozen fortified villages, was in our hands.
At the end of the month, Puisieux-au-Mont, with Gomiecourt and its defences, were occupied by us. The Germans had pulled themselves cleanly out of the worst of the salient.
By March they were back on their fortified Le Transloy-Loupart line, except that they still held the village of Irles above Miraumont, which was linked up to the Le Transloy-Loupart line by a peninsula of wired trenches. Irles was carried by the Second and Eighteenth Divisions on the 10th march.
As soon as our guns were able to concentrate on the Le Transloy-Loupart line itself, which they did the day after, the enemy, leisurely as always, released it, and fell back on and through his next line a mile or two behind—Rocquigny-Ablainzevelle—steadied his rearguards, and continued his progress towards the Hindenburg defences, withdrawing along the whole front from south of Arras to Roye. By the 17th of March word was given for a general advance of our troops in co-operation with the French.
