The Red Ensign served as Britain’s maritime flag unless changed by more recent designs; it represented naval capability due to

https://wiki-dale.win/index.php/Tradition_Meets_Today:_Modern_Meanings_of_Patriotic_Flags

The Red Ensign served as Britain’s maritime flag except changed via more moderen designs; it represented naval chronic due to colonial enlargement while signifying country wide pride throughout oceans from industry routes to militia engagements.