Vatican City

Jun 7, 1929 | Country flag, Special, State flag, War flag |

Together with Switzerland the only square flag in the world....

Alaska

Jul 9, 1927 | State / Province |

...

Thailand (Naval ensign)

Sep 28, 1917 | Naval flag |

...

Morocco (Naval ensign)

Nov 17, 1915 | Naval flag |

...

Morocco (Civil ensign)

Nov 17, 1915 | Merchant flag |

...