ブルー・エンサイン
The Blue Ensign replaced the Union Jack at the Olympic Games at St Louis in 1904. In the same year, due to lobbying by Richard Crouch MP, it had the same status as the Union Flag in the UK, when the House of Representatives proclaimed that the Blue Ensign "should be flown upon all forts, vessels, saluting places and public buildings of the Commonwealth upon all occasions when flags are used". The government agreed to fly the Blue Ensign on special flag days, but not if it meant additional expense, which undermined the motion. The Blue Ensign could only be flown on a state government building if a state flag was not available.