North and South; Red and Blue

There once was a house on a hill
The people in the North could see it
And the people in the South could see it too
The people in the North said that it was red
But the people in the South said that it was blue

The North warred with the South
At every opening and opportunity
To prove that each's assumption was true
The North to prove that the house was red
The South to prove that the house was blue

Until one fateful morning
When each unbeknownst to the other
Had planned a behind the lines sneak attack
The Southern army looked South and saw that the house was red
And the Northern army looked North and saw that the house was blue

The one not understanding the other's view
Until standing in the other's shoes