There nickname was the Yankees.
The Union Jack is the nickname of the UK flag.
The nickname for the British flag is the Union Jack. Although it is only correctly known as this when flown on a ship.
During WWII the US gave the nickname "The Red Tide" to the Soviet Union.
The Union.
The union of the states
It's common nickname is the 'Union Jack'.
The thistle's
The nickname of the United States is US or USA.
The Union Jack - properly known as the Union Flag.
Yanks, Blue Bellies,
The "Wobblies" (; Your welcome!