Chapter VI. 
THE APPLICATION OF THE METHODS OF MALARIA PROPHYLAXIS 
TO THE MILITARY SERVICE. 
In the following chapter a brief summary will be given of the 
methods of malaria prophylaxis which have been discussed and the 
manner in which they may be utilized in the prevention of the dis¬ 
ease in the military service. The fact that troops are under strict 
discipline makes it possible to more thoroughly apply prophylactic 
measures in the Army than is often the case in civil life, and for this 
reason better results may be expected when such measures are faith¬ 
fully and intelligently carried out. The great reduction in malaria 
in the Army already noted is proof of this statement, and there is 
no reason why these infections should not be still further reduced, 
and eventually disappear in our permanent posts if prophylactic 
measures are continued. 
As has already been stated, the prophylaxis of malaria requires 
very different methods in the field than in semipermanent camps and 
permanent posts, and in all situations the methods employed will 
vary according to local conditions and military exigencies. This 
fact must be recognized by every practical sanitarian, and in the 
following discussion regarding the application of malaria prophy¬ 
laxis to the military service it should be remembered that the sug¬ 
gestions offered are merely suggestions, which may or may not be 
practical in actual seiwice owing to the peculiar conditions surround¬ 
ing each prophylactic problem. 
Malaria prophylaxis in the -field .—The necessity for malaria pro¬ 
phylaxis in the field during the active operations of an army should 
have been ascertained before the invasion of the country with which 
hostilities are being conducted. This presupposes the accurate map¬ 
ping of the country from a sanitary standpoint, a hitherto much 
neglected branch of military information. In the past an accurate 
knowledge of malarial localities would have saved many armies an 
enormous loss from this cause, as campaigns could have been planned 
so as to avoid exposing troops to these infections, and the most ex¬ 
haustive knowledge of terrain is of little use if troops are so deci¬ 
mated by malarial infection as to be unable to take advantage of such 
knowledge. An accurate sanitary map showing the prevalence of 
disease in the country to be invaded would be of great value in the 
planning of any campaign, as in the majority of instances it would 
be found that badly infected districts could be avoided without dam- 
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