Call of Duty: Black Ops though is not collectible heavy game but still you can retrieve intelligence items which may or may not assist in your mission.
If you are into achievements, you can earn “Closer Analysis” achievement once you have collected all the intels. You can refer to the following guide for hints on locations of all the intels in Call of Duty: Black Ops.
Call of Duty: Black Ops Intel Locations Guide
Intel Location #1: Intel is behind RPG in the weapon cache you find in the garage.
Intel Location #2: When you are in the burning building, go to the right room on the second floor, and you will find the intel on the table lying there in the back.
Intel Location #3: You will find a plane hanger at bottom when you rappel down a hill. You will find the intel inside it.
Intel Location #4: When you are told to go to the roof, as Sergei tries to break into the armory. There is an intel lying on the table left to Reznov.
Intel Location #5: When you dive in with sergie under Sergei to hit the door switch, you will find a room at the back, with intel inside.
Intel Location #6: Just before you get on the Bike, get the intel lying on the shelf by Reznov.
Intel Location #7: You will find an intel on the right side of the third floor just before you get the ladder to the roof.
Intel Location #8: The room you blow with C4, its lying in the back.
Intel Location #9: The intel is the on left of the small command center in the control room.
Intel Location #10: On the hill you will come across a long tent with lots of crates inside. Go inside and the intel is on the left side.
Intel Location #11: When you are coming down the hill, you will come across a bunker on the far left, inside it is intel on the window facing downward.
Intel Location #12: Inside the burned Marine building, you will find an intel on the right side just before the room with American flag on the wall.
Intel Location #13: After you have retrieved the defector, and are leaving the site. You will find a small room just before the projector with intel inside.
Intel Location #14: When you are following the APC, you will take a right turn, just before the turn, there is building, get the intel inside it.
Intel Location #15: When you are to hold a building till transport arrives, final stages of the mission. The intel is in the building to your right while entering the area. Go there, take a right and you will come across a broken wall. Go past this wall to retrieve the intel.
Intel Location #16: Take a right when you are to climb the ladder, and retrieve the intel.
Intel Location #17: When you are sliding down a metal roof, you can see the intel in front of you on the ground in the fenced area.
Intel Location #18: When you are to retrieve the lost package, and you are moving from roof to roof. Starting where you lost the package, go down two levels, and you will find the intel lying on the metal roof.
Intel Location #19: You will find the intel on your right when you climb into the first building. After coming down the hill and not allowing anyone to surrender.
Intel Location #20: You can retrieve the intel in the room at the back of the white hanger.
Intel Location #21: When countdown starts, you will see the intel on your right, just before you reach the ship.
Intel Location #22: When you are in the hut, and into the main room. You will find the intel on the left side of the main room. You will enter the main room by taking left from the hut.
Intel Location #23: The intel is lying on the ground in the hut you come across at the end of the village. You will come across this village right after you plant explosives.
Intel Location #24: Take left in the rat tunnels from Reznov, you will find the intel lying on the ground at your right.
Intel Location #25: At start of the level, to the left of the crates.
Intel Location #26: In the small path to your right just after getting off the boat.
Intel Location #27: When you drop off the wings of crashed plan, search the ground and you will find the intel lying there.
Intel Location #28: In the second room in the barracks to your left, lying on the desk.
Intel Location #29: There is an intel in the room enemies come to attack you, first floor of the comm station.
Intel Location #30: In the warehouse covered with bombs, near the center table with bomb on it.
Intel Location #31: After going through the tunnel, you will come across a large ammo room, the intel is lying on the shelf inside.
Intel Location #32: Before you enter HIND helicopter, to the right side of the camp and you will find a table with intel lying over it.
Intel Location #33: Before entering the building with Kravchenko inside, take left and you will a crate with intel lying over it.
Intel Location #34: Intel is lying on the ground next to crate to your left while moving out of the shipping container you used for hiding.
Intel Location #35: In the containment cell, knife the enemy and get the intel lying on the cage with monkey inside.
Intel Location #36:When you reach your destination building it will catch fire. From there to the right of the destination building is a home, with intel on the shelves to the right.
Intel Location #37: When you come across the wall with 4 written over it, take left and you will find the intel on the machine.
Intel Location #38: When you enter a hall marked 132-3, take a right to a dead end, there is waste bin nearby, intel in inside it.
Intel Location #39: From the hall marked 2, enter the office area, and intel is on desk to your left.
Intel Location #40: When you are told to take the rockets to destroy the helicopters. You will find the intel to the left of the rockets on the ground by a large container.
Intel Location #41: At the bottom of the ship, you will enter a room with large table. Under the table on the far side of the floor is the intel you seek.
Intel Location #42: From the room with a large World map head up some stairs to an overlook room. Intel is on the floor under the desk to your right.
Once you have collected all these Intels in Call of Duty: Black Ops, you will earn “Closer Analysis” achievement/trophy.