(33) 
naissances et son ren- 
ccasion et je suis cer- 
quelques années qui 
C’est pour cette rai- 
.rmée des Etats-Unis, 
nais les devoirs de sa 
uelques jours, 
ilitaire est, naturelle- 
: et apte à remplacer 
rps of Engineers” est 
reux de la présence à 
mgineers” en second, 
létrie dans la défense 
THE ROLE OF PHOTOGRAMMETRY IN INTERNATIONAL DEFENSE 
Major General George J. Nold, 
Deputy Chief of Engineers, U.S.A. 
Mr. Chairman: 
Delegates: 
Ladies and Gentlemen: 
In January 1951, in this same building, my Chief, General Pick, addressed 
the annual meeting of the American Society of Photogrammetry and spoke on 
the importance of its Role in National Defense. His absence from the country 
prevents his personal appearance here today to address this larger group. In the 
meantime, our common aims and purposes have become more and more inter 
national in scope. The North Atlantic Treaty Organization has grown from an 
idea to a force of powerful significance. Our defense plans have passed from the 
national to the international plane. Consequently, I, myself, am grateful today 
for the opportunity afforded me to speak to you delegates here who are most 
concerned in this field — you international experts who are supporting the Role 
of Photogrammetry in International Defense. 
Many of the nations which you represent are partners in a movement to 
strengthen the defenses of freedom loving peoples and the lands which they 
inhabit. Significant elements in that defense, which embody both military and 
civil aspects, are the preparation and maintenance of adequate maps. Your 
contributions in the photogrammetric field comprise a vitally important part 
of this common defense effort. 
A good many of you are already active participants in mapping programs 
which have been generally acclaimed as excellent examples of the benefits which 
accrue from real international cooperation. I refer to the concerted mapping 
effort being sponsored by the governing authortiy of the NATO countries and 
to the mapping programs in Latin America which represent joint efforts of the 
United States and the countries concerned. 
Regarding this former job, as you know, the first requirement was to 
make available to the Armed Forces of NATO adequate map stocks for their 
use. These maps reflect international cooperation in their bi-lingual marginal 
data and in their use of a common military grid and grid reference system. For 
the first time in history all of the maps of the NATO contries are now based 
on a common geodetic datum arrived at thru adjustment of existing individual 
countries’ datums. The second part of this program required the production of 
more than 10 thousand different maps for which approximately 90 million 
copies were printed thru the combined efforts of the mapping agencies of all 
the NATO countries involved. Under phase three, new mapping is being pre 
pared by photogrammetric methods to cover areas not previously covered at 
the required scale or with the required accuracy. 
In the same spririt of cooperation, mapping representatives of the partici 
pating countries are engaged in a program to establish a set of international 
standards for maps. These standards, which affect all phases of map prepara-