This subcourse is approved for resident and correspondence course instruction. It reflects the
current thought of the Academy of Health Sciences and conforms to printed Department of the
Army doctrine as closely as currently possible. Development and progress render such doctrine
continuously subject to change.
When used in this publication, words such as "he," "him," "his," and "men" 'are intended to
include both the masculine and feminine genders, unless specifically stated otherwise or when
obvious in context..