This represents the flag that has been used by some of the Tercios de Requeté (Carlist militia) during the Spanish civil war (1936-39).
http://www.requetes.com/banderas/banderaF1.jpg

http://www.requetes.com/banderas/bansanmiguel.jpg
File:Flag_of_Spain_(Civil).svg by Vzb83
File:Coat_of_Arms_used_by_the_supporters_of_the_Carlist_Claimants_to_the_Spanish_Throne_(adopted_c.1890).svg by Heralder

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