Were we going up or them?

"Now take the Messines battle. We worked all night & slept in the day times to fix our trenches for the attack for several weeks before it took place. Then on the night of the 6th of June we marched to our assembly lines for...(page torn).. mile, this had to be done with gas masks on."

"So we reached our assembly trench about half past two in the morning of the seventh & waited till 3.15 a.m. when the earth began to move first to the left then to the right then up & down & side to side then the whole of his territory seemed to be on fire. You can't imagine the feelings, wondering if we were going up or him."