From Maine to Hawaii, from Florida to Alaska, everyone knows this song. And whether your ancestors fought in the Revolutionary War or you've recently become a citizen of this great country, you know it's America's song.
It is believed to have been written by a British army doctor during the French and Indian War. It ridiculed the colonials whom the English regarded as country bumpkins. "Macaroni" referred to an Italian style of fancy dress (a dandy) which was popular in England at the time.
In the early years of the War for Independence, the British soldiers taunted:

Yankee Doodle came to town,
For to buy a firelock,
We will tar and feather him,
And so we will John Hancock.

But the colonists turned the tables on the English and adopted it as their rallying song. They added many verses of their own, popular among which were:

Father and I went down to camp
Along with Cap'n Gooding
And there we saw the men and boys
As thick as hasty pudding.

And there was Gen'ral Washington
Upon a slapping stallion.
A-givin' orders to his men,
I guess there was a million.

PROUD TO BE AN AMERICAN!!