ii. Ascertain the exact range of certain objects visible from the

drill ground or barracks and teach him to note from these places the appearance of the objects under varying atmospheric conditions. When he has got the measured distances and the appearance of the objects firmly into his mind he should be exercised at longer ranges. To judge these he should measure the intervening ground by mental comparison with the distances with which he is familiar, or, should all the ground up to the object not be visible, he must judge the range from the impression conveyed to his eye by the object, bearing in mind how this impression may be affected by the conditions mentioned in Sec. =241= (2), as well as those which follow.

3. Under normal conditions:--

i. Movement of legs and arms can be distinguished at 1,000 yds. ii. Individual men become vertical lines at 1,500 yards.