Military

1.   What are the two purposes for the construction of trenches?

2.   Would you say that trenches are easy or difficult to camouflage?

3.   What is the purpose of the crawl trench?

4.   What depth and width should a crawl trench be?

5.   How far is the berm line located in front of the fighting trench?

6.   To what initial depth is the fighting trench dug?

7.   How is the front parapet of a fighting trench constructed in order to help prevent its detection?

8.   If spoil is available, why should the rear parapet of a fighting trench be higher than the front parapet?

9.   When can parapets of fighting trenches be omitted?

10.   How is the floor of the fighting trench prevented from becoming wet and muddy?

11.   The necessity for revetment of walls may sometimes be avoided by what procedure?

12.   In most soils, what slope is sufficient to avoid revetment?

13.   What is a serious disadvantage of having sloping walls of trenches?

14.   What is the purpose of facing type revetment of trenches?

15.   What condition or type of soil permits the use of facing revetment?

16.   What methods of support are used to keep the revetment in place?

17.   Sandbags can be used for revetting and the repair of trenches. How full must the sandbags be?

18.   How should sandbags be placed with reference to side seams or stretchers and choked ends on headers?

19.   What two pieces of equipment can be used to expedite the filling of sandbags?

20.   Dummy trenches are dug to conceal from the air or ground, the true extent of the defended area. How deep should they be dug and what means taken to make them effective?