The Union Jack or Union Flag is the de facto national flag of the United Kingdom. The Union Flag was also used as the official flag of several British...

A jack is a flag flown from a short jackstaff at the bow (front) of a vessel, while the ensign is flown on the stern (rear). Jacks on bowsprits or foremasts...

The national flag of the United Kingdom is the Union Jack, also known as the Union Flag. The design of the Union Jack dates back to the Act of Union 1801...

Jack Flag (Jack Harrison) is a superhero appearing in American comic books published by Marvel Comics. He has occasionally appeared alongside Captain...

The flag of New Zealand, also known as the New Zealand Ensign, is based on the British maritime Blue Ensign – a blue field with the Union Jack in the canton...

The Yellow Jack ("Quebec") signal flag, is a plain yellow banner that was historically used to signify a vessel was, or might be, harboring a dangerous...

The flag of Great Britain, often referred to as the King's Colour, first Union Flag, Union Jack, and British flag, was used at sea from 1606 and more...

The jack of the United States, referred to as the Union Jack by the U.S. Navy, is a maritime jack flag flown on the bow of U.S. vessels that are moored...

The national flag of the Philippines (Filipino: pambansang watawat ng Pilipinas) is a horizontal bicolor flag with equal bands of royal blue and crimson...

variety of flags flown by ships of the Commonwealth during the Interregnum of 1649–1660. At sea, royalist ships continued to fly the Union Jack of 1606,...