saw this on TMP, and had to get me books out
only two answers for you so far Willie
Sargento-two stripes, bottom stripe is twice as wide as the top stripe
Sargento-mayor three stripes, top stripe consists of two thin stripes joined together, bottom stripe is large single stripe; like the Sargento
Officers Galleta (biscuit) the patch on the jacket, Bueno has it repeated on the shirt as well.
cheers
Nigel