Basement
Ground
1st
2nd
3rd
Map
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Library of Congress Classification
A B C D E F G
H
J
K
L
M
N
P
Q
R
S
T
U
W
Z
Subclass U Military science (General)
Subclass UA Armies: Organization, distribution, military situation
Subclass UB Military administration
Subclass UC Maintenance and transportation
Subclass UD Infantry
Subclass UE Cavalry. Armor
Subclass UF Artillery
Subclass UG Military engineering. Air forces
Subclass UH Other services