When James VI of Scotland inherited the throne of England as James I of England in 1603, the crowns of the Kingdom of England and the Kingdom of Scotland were united under him.
On 12 April 1606, a new flag to represent the union between England and Scotland was flown. It consisted of the flag of England (a red cross with a white background, known as St George's Cross) and the flag of Scotland (a white saltire with a blue background, known as the Saint Andrew's Cross). It was not until after the act of Union of Ireland with England (Wales) and Scotland on the 1st January 1801 that the Cross of St Patrick was combined with the then Union Flag of the Cross of St Andrew and the Cross of St George this amalgamation give us the Union Flag we have today, The Union Jack the flag of the United Kindom
A moth-eaten rag,
On a worm eaten pole,
It doesn't look likely
To stir a man's soul,
Tis the deeds that were done
'neath the moth-eaten rag,
When the pole was a staff,
And the rag was a flag.
We never shall surrender
The glories of the past;
But shoulder still to shoulder,
Protect them to the last;
We must and shall go forward
We will never travel back
And forever, aye forever,
We shall hoist our Union Jack.