First one is the Iron Cross of Germany, the Admiral's flag to be exact.
Second is the Castles and Lions flag Columbus used representing Castille and Leon
The Third flag is that of Columbus' fleet, The Crowned F for Ferdinand, the Crowned Y for Isabella, and the cross inbetween the two.
The Fourth, the Fleur de Lis with a white background is the "Buorbon Banner", used by the french before the french revolution.
The Fifth has me stumped.....