US-UK Alliance Flag - Symbol of Transatlantic Partnership #1797894 (License: Personal Use)

This composite flag merges the U.S. Stars and Stripes (13 stripes, 15 stars reflecting early 19th-century design) with the UK’s Union Jack in a quadrant layout. It visually represents historical cooperation, including wartime alliances, NATO collaboration, and diplomatic coordination. The design is often used in commemorative or educational contexts highlighting transatlantic unity.

Used on government, educational, or diplomatic websites to illustrate U.S.-UK relations; common in articles about NATO, WWII commemorations, or bilateral summits. Matches user intent for historical symbolism, international relations, or flag design research.