She spent the next six weeks at home on a kind of personal retreat.

I think you should have left him an out, a line of retreat.

Now the city was on the main line of retreat.

At the end of the retreat, a service is held.

Only one way of retreat had been possible to him: through the wall itself.

The car kept moving until it passed the head of the retreat.

Someone who might have been afraid to close off his line of retreat!

The first thing was to stop the northern line of retreat.

"This is the line of retreat you were talking about?"

The key here is the speed of the American retreat.