11am The enemy first shelled Gowrie St with about 40 shells and then commenced a 20 minute intense mortar bombardment. Several salvos of large "sausages". Our 4.5" Howitzers retaliated. Rest of day quiet except for rifle grenades on left.
6pm to 6.45pm Heavy bombardment about 5 miles to the North.
10.15pm A salvo of "sausages" on our left front, could not get any retaliation by our 4.5" Howitzers.
A great many lights sent up by the enemy during the night behind La Boisselle. Red, Green & White lights, there seemed to have some connection in aircraft for a Zeppelin (?) went over Eastwards at 11.50pm, it was heard for 20 minutes but not seen.
12mn German working party heard and seen in German lines infront of trench 116. Our 18lbs fired 2 rounds gunfire on to the point.
Remainder of night quiet.
Monthly war diary casualty list: 15769 LCpl E Scottow- wounded; 14633 Pte E Cooper- wounded.
Morning all quiet. During afternoon our 18lbs tested new line of barrage infront of 112-116 Germans retaliated with "wizz bangs" our Heavy Trench Mortars fired several rounds, enemy retaliated with "sausages"
6.10pm Several "sausages" exploded in trenches 117-118 and knocked down about 40 yards of parapet. Our 4.5" Howizters very slow in retaliating.
9.30pm Considerable artillery action on our left about 4 miles away?
Strong Westerly wind during the night. Fighting Strength. Officers 31 other ranks 884.
A war diary appendix lists two casualties for this day:
13316 Pte D Richardson - Died (Found dead in dugout- Cause of death: Tumours on Brain)
Battalion relieved 6th R Berkshire Regt in trenches, relief completed at 12.30pm
4.15pm We exploded mine infront of Fairmaid St- blew a crater- Before the mine was exploded our 4.5" Howitzers fired for about 1/2 hour at German trenches in and South of La Boisselle- Immediately after explosion of mine our 18lbs opened fire with shrapnell on La Boisselle and German trenches infront of 117-120. Germans retalitated with "wizz bangs" and 6 HE on trenches 119-121.
6.30pm OC 185 Tunnelling Coy reported that mine was most successful- Germans were heard working till just before the mine was exploded.
Evening very quiet.
11.45pm Message from Brigade warning us of possible German attack on following day.