A vectorized version of the official insignia used by the now defunct 1st Cavalry Group (nicknamed Dragoons of Angola) of the Portuguese Army.
Own work, based on https://web.archive.org/web/20221112185404/https://i.servimg.com/u/f85/13/85/69/53/cracha10.jpg andhttps://web.archive.org/web/20221112185506/http://ultramar.terraweb.biz/ProcuradeCamaradas_imagens/ECav0403/Esquadr%C3%A3o%20de%20Cavalaria%20403%20do%20Grupo%20de%20Cavalaria%201%20RMA.jpg