The St George's cross, a red cross on a white background, is the national flag of England and has been from about 1277. After England joined with Scotland by the Act of Union 1707 a Union Flag was created which was used for all national matters, but the flag of England (as opposed to the United Kingdom) remains St George's Cross, and continues to be used when showing allegiance to England alone - primarily nowadays at events such as international football matches.
The flag of St George is also the rank flag of an Admiral in the Royal Navy, and civilian craft are forbidden from flying it. However, ships which took part in the rescue operation at Dunkirk during World War II are allowed to fly it as a jack.
St George's flag is not to be confused with the flag of the red cross. The flag of St George has a red cross which reaches from edge to edge of the flag. The flag of the red cross, like the Swiss flag, has a cross which does not reach the edges.
St George's Cross should not be confused with the Cross of St. George, a military distinction in Russia, and a civil distinction - the maximum honor - in Catalonia.
The narratives of the early pilgrims, Theodosius, Antoninus, and Arculphus, from the sixth to the eighth century, all speak of Lydda or Diospolis as the seat of the veneration of St. George, and as the resting-place of his remains (Geyer, "Itinera Hierosol.", 139, 176, 288).
George, even though he is not commemorated in the Syrian, or in the primitive Hieronymian Martyrologium, but no faith can be placed in the attempts that have been made to fill up any of the details of his history.
The chapel dedicated to St. George in Windsor Caste was built to be the official sanctuary of the order, and a badge or jewel of St. George slaying the dragon was adopted as part of the insignia.