Saint John Eagle Flag Standar

A little background on this flag: 

With the uprising of 18 July 1936, a decree of August 29 of that year, in its sole article provided that: "It restores the flag as red and yellow bicolor Flag of Spain ', in the shield, another Act February 2, 1938, article 1, determined that:

"The Coat of Spain is the heraldry of the Catholic Monarchs, replacing the arms of Sicily by the ancient kingdom of Navarre, which integrates with the crests of clusters of medieval states that constitute today's Spain." 

Eagle falls in this period and as National Flag (1938-1945).