Opinion is fine. But history does record it.

We all know watches were common in trench warfare to effect the timing of artillery barages, time to make infantry attacks etc.

I do doubt someone was actually timing anything on a stopwatch or watch during the defence of a massed infantry attack however. But a rough timing, and counting how many cartridges were expended is quite possible. And soldiers do have lots of boring "down time" in between the moments of action.