Operation 40 (Part 2):

Intel 1: When you go into a room with an RPG leaning against a crate, look at a shelf and the Intel will be there.
Intel 2: When Bowman 'breaches', holding an enemy then shooting him, go to the right of where he is and look for the Intel, it should be on a table.
Intel 3: After rappelling down, go inside the hangar and look for the movable stairs at the left, the Intel is at the top of the stairs.


Vorkuta:

Intel 1: (Don't rush) When you get to the shotgun arms locker, go up 1 floor and the Intel will be on a cabinet.
Intel 2: Once you get the Death Machine, go downstairs and you'll see double doors under the stairs, go into the room and search for the Intel.
Intel 3: When you're in the 'Garage', go behind Reznov, look for the Intel sitting on a shelf.


Executive Order:

Intel 1: In the Comm's Tower, go to the 3rd floor and look for the Intel, it's sitting on a desk.
Intel 2: Once you've destroyed the rocket with the Valkyrie Launcher, Go back inside the room and collect the Intel just on top of a computer bay on the left. (You can collect the Intel before or after you destroy(ed) the rocket.
Intel 3: Once your in the 'tunnels' and you safely get a checkpoint, go to a room on your right, kill the enemies and look for the Intel there.


S.O.G.:

Intel 1: It is where the LAW rockets are, the Intel is sitting on ammunition boxes, under a tent.
Intel 2: The Intel is where the napalm barrels are. It's in one of the bunkers at your left when you enter the 'battlefield'.
Intel 3: This last Intel in this level is in the destroyed bunker (before you go destroy the tanks), look for the soldier stumbling around, it's behind him and on a wooden shelf.


The Defector:

Intel 1: The Intel is just in a small room to your right, behind Reznov (when you meet him).
Intel 2: The Intel is just inside a house, in front of the house, there are 2 cars, 1 blue, 1 white. Go inside and find the Intel sitting on a desk in the first-floor room.
Intel 3: The Intel is where the 2nd tank battle takes from, it's in a destroyed house, next to the blocked road (left).


Numbers:

Intel 1: Once the Russian show up through the hallway, look right, go in Clarke's office and the Intel will be on the shelf.
Intel 2: After the slow-motion slide from the roof, kill the enemies (blow up the gas tank), and then go under the shed, the Intel will be there.
Intel 3: Before you go down the part where you fall and get the CZ75, look back and you should see the Intel, if you're in 'floor' high, go down once, then look back again.

I'll continue later, right now, my hands are dying.