Different people have different problems tackling this mission. Click on one from this list that describes your problem.
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Somewhere during the first 15 minutes of mission gameplay, a radio message is issued stating that the evacuation point has been changed. Whether you arrived in Morton before or after that message transmission makes no difference. You must reach the secondary evacuation point in order to complete the mission.
That's good! That's what's supposed to happen, according to the script. Let the video cut-scene play out till you find yourself in a tent guarded by armed Ruskies. Then you'll simply have to escape.
Heh! Search the forums for existing threads about the "After Montignac" mission. There are dozens of threads on them discussing various strategies on completing this mission successfully. Here's an example of a thread containing a spoiler for this mission.
Here's my own spoiler, based on how I completed the mission:
I have had the honor of finally meeting Slava!
First of all, I was definitely frustrated till I finished this mission but in a good way. Lots of challenge and it was never the same every time I played. This is an unbelievable game!
When the mission starts, there are 2 dead buddies about 20 meters to your right, at a 45 degree angle from you. Hurry (someone is coming) and take the binocs and laws from the one on the right.
Quickly turn due north and run fast (always fast) about halfway through the forest. Then turn NE and keep running till the eastern end of the forest.
At the forest edge, there might be Ruskies waiting depending where you came out. There are some blind spots there when you can run due east across the open field for a couple of hundred meters, till you reach the road. You might have to retry till you find the right place to exit the forest.
Cross the road and follow it in parallel heading south. You will eventually see the town of Provins up ahead. This is where the previous mission ended. Approach the extreme NE house in town. behind it is an ammo supply. Take some hand grenades. Save the game at this point.
On your belly, crawl to the very near corner (NE) of the house. In the distance due east you'll see a UAZ and there might be some Ruskie helmets popping up near it. To the UAZ's right and behind some trees is a BMP on a lunch break.
Take out the BMP with a LAW. The soldiers around the UAZ will start running your way. You should be able to bowl them down with a nade or 2.
Get into the UAZ and turn a little to the right to go on the close road heading south. Look at your map. You'll have to pass through the next town, Figari. Once through, about 200 meters after the town there's a left turnoff from the road.
Don't take the left but at this juncture head due south over the open field. You are approaching the niche in the forest straight ahead that was designated the secondary evac point.
Drive the UAZ fast (always fast) along the tree line and zigzag just a bit so that the T80 and the Hind (ouch!) don't get you. At some mission trigger point here, near the area marked as the new evac point, you will be taken captive.
Let the storyline run till you're in a tent being guarded by the enemy. Resistance will start attacking the Russians. Get down and stay down. Crawl outside the tent entrance, grab an AK47, if you insist, and sprint ahead and left of the tent where you should see some resistance fighters finishing off their job and making a retreat. Follow them. You should then get the mission's ending movie where you're introduced to Slava.
War stories you'll be able to tell your grandchildren about!
OK, lamer, look here.
The mission is defined to have foggy weather start rolling in late on in the mission. If it looks like fog, that's because it is fog. By the way, fog impedes the enemy's view of you as well.
Hmm..... That doesn't leave us much choice but to refer you to the forums. If you would like to email a copy of your problem to me, I'll consider adding it to this part of the FAQ.