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How to identify military rank (us army ) 
Know where to look for insignia. 
Enlisted soldiers' uniforms include the army combat uniform (acu), which is typically made of camouflaged print fabric, and the " green " uniform, which is made of a heavy fabric coat and trousers or skirt. Insignia will be displayed on various places depending on the type of uniform : 
Look on the cap of an acu.
Choose your answer from: -Enlisted soldiers display their rank insignia in the center of their caps. A rank insignia patch will be sewn on the chest area of an acu.; -The acu also usually contains spray paint that will contrast with the somewhat dark tint of the uniform. Look at the sleeve cap in which the insignia should be located.; -Look on the insignia for a specific symbol. Check on the shoulders for symbols that resemble soldiers wearing field uniforms like the illuminated american flag or the camelback insignia.; -Label an acu on the side opposite or inside of the emblem on an army-specific t-shirt or other similar piece of paper. Look on the strap of an artillery gun.;
Enlisted soldiers display their rank insignia in the center of their caps. A rank insignia patch will be sewn on the chest area of an acu.