Generalissimo Franco adjusted to a postwar era where a perceived friend of Hitler and Mussolini could have a target painted on him, where German state violence towards Jєωs and others had become notorious (albeit not in the semi-religious sense later while Soviet violence was deliberately erased). Division Azul was one of the best foreign contingents on the eastern front, avoid the riotous violence towards civilians that portions of the invasion force could be prone to (although sincere efforts were made, throwing criminals into punishment battalions while nothing needs to be said of the Red Army, whose atrocities were encouraged) anyhow far better than most other foreign contingents. El Caudillo saw how the US was beginning to properly understand the menace of the Red Empire, and adjusted his rhetoric to the times. Jєωιѕн banksters had not quite displaced the old WASP class, so rhetoric had to be carefully honed. Gen Franco had great affection for his tough north African regulares who were utterly skilled in their use of the land, and brought home to red rebels the consequences of their crimes with harsh methods. His personal guard was drawn from these tough, fearsome fighters.
Great leaders do get where they are by being shouty and obvious.
Morocco has used that flag with its green pentangle since 1915 when Sultan Yusef ben Hassan made it the flag of his country, then a Franco-Spanish protectorate.