I just read the whole thing and this is the only part that even has the word uniform in it...
Article 27
Clothing, underwear and footwear shall be supplied to prisoners of war in sufficient quantities by the Detaining Power, which shall make allowance for the climate of the region where the prisoners are detained. Uniforms of enemy armed forces captured by the Detaining Power should, if suitable for the climate, be made available to clothe prisoners of war.
The regular replacement and repair of the above articles shall be assured by the Detaining Power. In addition, prisoners of war who work shall receive appropriate clothing, wherever the nature of the work demands.
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