An individual should be able to judge distance accurately with his eyes so that the individual can decide on the following:-
(a) Know when to open fire.
(b) Know which weapon to be used.
(c) Can indicate targets to other men in his section
(d) Pass back accurate information when acting as an observer.
OR
Distances are overestimated when:-
(i) Light is bad.
(ii) The sun is in the observer’s eye.
(iii) The object is small in relation to its surroundings.
(iv) Looking through a valley of narrow lane e.g. street.
(v) Lying down.
(vi) Looking from top to bottom