4. The provision of protection against enfilade and reverse fire, and the recognition of distant localities from which such fire, whether of artillery or rifle, might be brought to bear on the post.
5. The marking of ranges in each direction.
6. The provision of obstacles.
7. Any feasible scheme for alternative positions which his men could reach and occupy under fire.
8. The concealment of the defences, provision of dummy trenches, and loop-holes and any other shifts.
9. The telling off and posting of look-out men and fixing and occupying of alarm posts when work has been completed.
10. Drainage and sanitation.
The concealment of defences from aerial reconnaissance will, perhaps, soon claim more attention than it gets at present.
Practise an attack after defence, starting off one platoon under your own orders to “go for” an indicated enemy, and sending word either by messenger or by semaphore to the others, either to join you and form a firing line, or to move out in support, but, if the latter, do not fail to finally call them up to reinforce the firing line; counter-attacks must usually be made with a relatively strong firing line and small support.