Rewriting History

You can't invent the past, unless you lie
About the present, and also the past.
You seem to change your story pretty fast,
So nobody believes you when you try
Taking the credit for saying good-bye.
You said you cried, but now you're laughing last,
So those are tears of joy discreetly massed
Along your cheeks, are they? You're rather sly.

This is an odd time to start your attack;
When troops, arrayed along a foreign shore
Prepared for battle, no one knew what for,
So everyone just waited, and stood back,
Expecting trouble, since you've got the knack.
The war is over now. There was no war.