The last word in the perfection of trench warfare had been spoken by them.
The second was an elaboration of the tactics of trench warfare.
The corps now settled down to the routine of trench warfare.
The grenades, however, held their own, and were much used in trench warfare.
As always in trench warfare, the night was the time of activity.
As the British also dug themselves in, this was the beginning of trench warfare.
We had now finished our instruction in trench warfare and were going to take over part (p. 042) of the front line.
A show-ground was also laid out, where the best methods to be adopted in trench warfare could be demonstrated.
Next to mining, the most nerve-racking form of trench warfare was provided by the trench-mortar.
I thought that he was baffled and would say no more, but I had forgotten the developments of trench warfare.