“‘Heartiest congratulations to you all on fine work on 16th and 17th May 1917, and especially on General Burn and 152nd Infantry Brigade, whose tenacity and pluck saved an awkward situation. The Division may well be proud of their latest achievement.’”
General Allenby, commanding the Third Army, wired: “Convey to 51st Highland Division my congratulations on their great gallantry at Roeux and the chemical works.”
On the night 16-17th May the 153rd Brigade and the 5th Gordon Highlanders were relieved in the line, the 6th Black Watch taking over the left sub-sector, and the 4th Seaforth Highlanders the right. On the extreme north of the Divisional boundary about fifty men of the 6th Seaforth Highlanders could not be found in the darkness, and were in consequence not relieved until the following night. The command of the front was then divided between the 153rd and 154th Brigades; the 152nd Brigade moved back to Arras to recuperate and refit. They were not employed again in this sector, the other two brigades remaining permanently in the line until the Division was relieved on 31st May.
From the day following the battle until the date of relief the 153rd and 154th Brigades were severely and constantly bombarded by guns of all calibres up to 8-inch. The enemy was extremely active in the air, and made considerable use of aeroplanes in co-operation with artillery. The Divisional war diary for 24th May runs as follows: “Hostile shelling intermittent but accurate. Enemy aeroplanes for the past week have had an uninterrupted survey of our lines. Between 3 P.M. and 3.30 P.M. an aeroplane registered the right brigade headquarters, scoring several direct hits, and causing considerable casualties.”
The following day the right brigade was shelled out of its headquarters, and had to move back to an embankment west of Athies. The activities of these aeroplanes were to a certain extent checked by employing Stokes guns to engage them with air-bursts. It was the first time that the use of Stokes guns as anti-aircraft guns was attempted; and though it was almost impossible to obtain any degree of accuracy, the Stokes bombs certainly had a deterring effect on the enemy’s pilots.
In spite of the continual bombardments, with the assistance of the 8th Royal Scots, the field companies, and some tunnellers, the troops in the line made rapid progress in the consolidation of the position. The trenches everywhere were deepened, wire entanglements erected, and the construction of dug-outs begun.
It was during this period that a party of sappers had an interesting adventure. The party, led by Major Bisset, M.C., and Captain Grant of the 404 Field Company, R.E., went forward to destroy a bridge which was shown on air photos to have been constructed across the river Scarpe. This bridge crossed a stretch of the river which flowed due east and west. At this time our line on the north bank was some thousand yards in advance of the line on the south bank. Thus this bridge, though it was well behind our lines on the British bank of the river, was well behind the German lines on the German bank. Any attempt to blow it up was, therefore, certain to be attended by considerable danger.
On arrival at the so-called bridge, it was reconnoitred and found to be nothing more than a tree which had been knocked over by a shell, and which, lying across the surface of the water, had formed a dam and collected a mass of floating débris. It had thus the appearance of a broad wooden bridge on the air photographs.
Major Bisset decided that as the tree was in a position in which it could be utilised as a bridge, it was advisable to destroy it. A sergeant accordingly waded into the river, and was standing with water up to his neck fixing the charge to the tree, when a German sentry walked out along the tree-trunk towards the centre of the river. When his feet were a few inches from the sergeant’s head, he stopped, unaware that he was covered by the revolvers of the two officers. After a pause, apparently suspecting nothing, he moved away. The tree was then successfully blown up without incident. The adventures of this party were, however, not yet over. On their return through the British lines they were mistaken for a German patrol, and were engaged with close-range rifle-fire. Fortunately no one was hit, but the whole party was compelled to take refuge in shell-holes. The trench party then proceeded to bomb them. The bombs produced such a torrent of unmistakably Scottish oaths that it ceased at once—not, however, before a Mills bomb had pitched between Major Bisset and Captain Grant as they lay in the same shell-hole.
On the arrival of this bomb both officers feverishly searched for it in the dark, in the hope that they might be able to throw it away before it burst. When it was found, they discovered to their great relief that in the excitement of the moment the man who had thrown the bomb had forgotten to extract the safety-pin, and that therefore it was fortunately innocuous.