In said plan, Alexander was assigned to lead an advance force.

As a result we have all but wiped out their advance force.

The commander of the French advance force was not available for a comment.

No advance force had been sent to prepare the fortress.

Enter the palace with the advance force but try to find an excuse to leave the King's side.

It wasn't intended that they should be an advance fighting force against aliens.

I think they'll send an advance force, trying to draw us out.

First, with a child among us, the probability that we will be killed by the advance force is significantly reduced.

I am the last of our advance force left alive.

But we lost contact with our advance force many millennia ago.