C-4 or Composition 4 is a common variety of the plastic explosive known as Composition-C, a mix of RDX, plastic binder, plasticizer, and a marker chemical to identify its source. It is 1.34 times as explosive as TNT and has been in use since the 1960s when it was developed. C-4 is often used primarily in breaching obstacles or demolition of large structures where large charges are required. C-4 has been featured in Battlefield 2, Battlefield 2142, Battlefield: Bad Company, Battlefield: Bad Company 2, Battlefield Play4Free and Battlefield 3.Special Forces Kit. It is most commonly used to destroy enemy armored vehicles, as well as enemy installations such as Artillery and UAV Trailers.
In Battlefield: Bad Company, DTN-4 can be found in various places in the singleplayer campaign. When picked up, the player has 5 sticks of DTN-4 and the detonator. It is deployed with R1 Button (PS3)/Right Trigger (X360) and detonated with the same button/trigger. In order to place more than one charge, the player must press the Square/X button to bring up another stick. It is needed to destroy the bridges in Ghost Town to hold off the US advance so Bravo-One Charlie can continue through Sadiz unimpeded.
In multiplayer, DTN-4 is an unlockable gadget for the Specialist Kit. C4 can be thrown short distances and is detonated remotely by the player. The C4 is useful for breaching walls to get to objectives. It can be placed on Gold Crates to cause high damage or even destroy the Crate with little time consumption. DTN-4 is also very useful for destroying vehicles. It only requires 2 sticks to destroy a vehicle that is not damaged, one for a vehicle with 85% or less health. Allthough extremely effective, it requires the player to run right up to the vehicle to place the explosives where he/she can be shot by a gunner, shot by a player outside the tank, or even run over by a suspecting driver. An alternative to placing the DTN-4 on the tank directly, the player can place the explosives in a specific location where a vehicle would be believed to cross. When the vehicle crosses over or near the DTN-4 the player can detonate it with extremely deadly effects. The only problems with this is that the player needs to be observing the area where the trap is to detonate it and the vehicle has to go over that one spot, making it a little time consuming to get your kill. To avoid this, you can place multiple explosives in multiple spots to ensure a kill comes with it. All explosives will be destoyed with one detonation. Another way of using the DTN-4 with effectiveness is placing it on unoccupied vehicles and detonating it when another player ebters the vehicle
In Battlefield: Bad Company 2, C4 handles very similarly to DTN-4 in Battlefield: Bad Company, except that the player doesn't need to equip the C4 in advance of deploying it. In singleplayer, it can be found on many levels, but it unfortunately does not carry over to the next level in the campaign. When equipped, the player can deploy a maximum of six satchels at a time, and after that, the satchels start to disappear starting with the first one placed. It can be useful against vehicles, bridges and buildings, and can also be a very good smokescreen for the player after it is detonated. The player's C4 will be replenished at ammo crates.
In multiplayer, C4 is used by the Recon Kit, or by the Assault Kit when using a weapon unlocked for all Kits, and it is the most powerful explosive available in-game, except for the ATM-00, which has the same damage; both can destroy vehicles in one unit, regardless of type or hull integrity, though tanks and IFVs will need two to the front or in corners, or one in the middle of the back or sides. A common tactic, often used in Rush is to fill the house or room that the station is with C4, then when the bomb is planted the user destroys the building and kills everyone in it, this often results in double, triple, or multi-kills. In a Rush game, it takes 23 C4 charges to destroy the objective (or 19 with the Improved Demolitions specialization). This practice, however, is highly frowned upon by many players in the community as it is a cheap method as opposed to arming and detonating the charge instead.
Tips and Strategies
One strategy is to use it in combination with the Motion Sensor as a trap. By throwing some C4 charges onto the ground or vehicle, and throwing a motion sensor near the position, a Recon player can detonate the C4 when enemy players move there.
A highly frowned upon tactic, known as "Suicide Quading", is for players to load a Quad Bike, UAV or other vehicle with C4, then drive or fly it into an enemy and detonate the explosives. While it can be an effective tactic against tanks, it results in the loss of vehicles and accidental player suicide. It is also known as "Jihading".
A third common tactic is to simply rush up to an enemy vehicle and place C4 on it then run to cover to detonate it. This tactic is more effective against tanks because of their slow speed. However, rushing to the tank and retreating is dangerous, especially light tanks with side mounted MGs.
Another tactic to employ during games of Rush is equipping as much C4 as possible and rigging destructible buildings that contain M-COM stations. The player then detonates the charges, destroying both the M-COM station and anyone caught inside the building.
C4 is good at destroying vegetation and other view-obscuring obstacles in maps, creating a "no-man's land", that is dangerous to cross.
thumb|right|300px|C4 Information and uses
C4 is fatal to infantry, though flak vests can provide some protection at a distance. A single pack can ruin light armor and disable heavy armor; two packs can destroy heavy armor. The minimap icon for C4 is shared with M15 Anti-tank Mines.
With Destruction, players can use C4 to create passages through certain barriers. This can be useful for flanking or escaping. Explosive objects such as cars and gas tanks can also be turned into large-scale booby traps.
Unlike many prior games, Engineer) by holding down the button.will detonate deployed C4. is used to deploy, rather than switch between packs and the detonator. Packs can be retrieved (or defused by an
In normal game modes, players cannot detonate friendly explosives with their own C4. While preventing usage of tactics like the triggered minefield, several players can stack layers of C4 in a Car Bombing attack, allowing multiple such attacks to be performed in a single run.
- The C4 in Battlefield 2 and Battlefield 3 are of almost exactly the same design, although the plunger in Battlefield 3 is a different design.
- C4 and ammo crates may be dropped before the start of a game allowing for two support players to get points in the first seconds of a game.