1.   More years of trench warfare and carnage on the Western Front.

2.   The little-noticed trench warfare over Senate confirmation of presidential appointees is nothing new.

3.   There he experienced the full horrors of trench warfare.

4.   Yet to continue trench warfare as before would be a mistake.

5.   A similar illness was seen during trench warfare in the American Civil War.

6.   The musical evokes the courage and humour of the troops amidst the horror of trench warfare.

7.   And again, the outcome is likely to have more to do with the trench warfare among industry lobbyists than with clashes between Democrats and Republicans.

8.   As visitors climbed to other floors, they would be able to peer down on exhibits depicting trench warfare.

9.   At the local level, trench warfare has been persistent.