Thanks for moving this to the OoC. Though I love being a pedantic, this discussion doesn't belong there anymore, the point has been made. You ain't looking at a fortified enemy, but an enemy on a hill.
Did you ever see the Kenneth Brannagh movie "Henry V"?
Or Braveheart? Or the horrible movie King Arthur? Spartacus?
They met the enemy "dug-in", with time enough to prepare stake boundaries, Hollywood oil traps, huge rolling timber logs, burning pitch and other nasty traps. A "prepared position". Another word for "dug in".
That dug-in is a modern term, due to the need for protection against artillery, just makes it even worse to use in this case.
What you're looking at is an enemy on higher ground who just got there. That ain't dug in.