Whether you're playing in Halo 3 team games or free for all, your positioning can either help or harm your kill-death ratio, kill-death difference, and you or your team's current situation in battle. Good players put themselves in good situations. That's what makes the difference between an average and an expert player. With decent aim, anybody can make a kill. But with good positioning, movement, and good techniques, you can have a positive kill to death ratio.

This advice does not talk about specific locations or tricks that will help you during trivial moments. This information is beneficial for those who want to play better in the long run.
When you're in the battle field, you must take these things into consideration if you want to gain the advantage.

• Location, where you are, where your team mates are at, your opponent's location, and where you can go.
• Weapons, what kind of weapon your holding, and what weapons your enemies are holding.
• Shield, how much damage you and others can receive.
• Weapon Spawns, chances of a target or ally being at a specific weapon spawn.
• Hot-spots, locations where target's are most likely to be.
• Field of View, areas where you, your team, and your opponents are likely to be looking at
• Skill, skill and movement style of yourself, and all other players in the game
• Chance, keep your cross-hair in the location where you feel someone is most likely to appear, to decrease the time and the distance you have to drag your reticule to aim at your target.

All these things are important when getting killed isn't what you have in mind. And it will certainly be to your advantage if all this information are being calculated through your instincts/sub-consciousness.
Knowing these things will help you determine safe paths so that you can go from point-A to point-B without getting killed in the process. And more importantly, knowing this information will help you exploit your enemies weak points. No one is invincible, no matter how good they are. They are just very good at exploiting your weaknesses to their advantage.

Know Your Location
As much as possible, find out your opponents location. And determine whether you have the advantage by assessing whether your location is out of your opponent's field of view, your options, and what kind of weapon your opponent has. Know as much as you can, whether its by communication or by simply observing locations. If you know you are at a disadvantage, don't open fire unless you have a specific purpose for doing so. You won't get every kill just because you made the first shot. Be sure you can kill your target before you expose yourself to your opponent or his/her entire team. If they are good, they will call you out and you will be trapped!
When moving from point A to point B comes in mind, chances are you will run into uninhabited locations. There is no such thing as a safe spot unless you make it safe. Don't jump into quiet areas simply because it looked like no-one was there without considering the possibility that someone is setting a death trap for you. Look at your team mates, or other players in the game if you can and think about who could be where. Listen to any signs of gunfire, and keep an eye out for movement. You don't want to give them a free kill by walking into the open because you made a clumsy mistake.

Gaining the Advantage
If you know someone is near, consider positions such as higher ground. Anywhere and any place that will make it harder for your opponent to kill you. And if you are in a team game, try to help, if not lure, opponents toward other team mates or players to increase your chances of survival.
In some cases, using your opponent's field of vision to gain the element of surprise will help you "sneak" in a significant number of shots before he returns fire. As much as possible if it is to your advantage, keep yourself further than 75 degrees both left and right from where your target is looking at to gain the first shot advantage. That is, if locking yourself in a one on one battle is not your only option.
In a one on one situation, using cover to reduce the number of shots you receive will help you and getting the kill. Somtimes, it takes tricky footwork or even unpredictable, or non-linear escape routs to gain the advantage.
Form the testimony of xVxV3ndetta, "Sometimes, it means having to put yourself in predictable places to turn the situation around with an unexpected move. During one game, I was chased around by a carbine... and I had no shields!! I didn't return fire. Instead, I turned and ran and sure enough he followed me. And what followed him was some of the most hilarious taunts I've ever heard. What made it particularly funny was how I turned the situation around to my advantage.
I ducked in cover behind something small enough to cover some of my head, my chest, and some of my legs. Overconfident, the predator came in firing away like I was supposed to die right away.
I knew that if i put myself here, I had several advantages:

• I had enough cover to keep me alive long enough
• I was in slightly higher ground because I was hiding in a slope
• His overconfidence put him in the open
• I had a Spiker and an SMG in my hand, which is good considering how close he was to me

To his surprise, I jumped almost right over him and he fired away hoping to kill me in time. But my angle was too great and his sensitivity was too slow to follow my movement. And I looked down and fired away, killing him as soon as I landed on the ground.
I was supposed to be dead, but he died instead. If I could re-view that save replay, I surely would've."

Choose Your Targets Wisely
Think about where enemy targets might be hiding, or where they may appear, and move in such a way where you will receive the least possible damage. And no damage at best. Sometimes, you have to position your opponent instead of yourself to gain the advantage. Seeing someone first doesn't always mean that you'll have the immediate advantage.
For Example, lets say that all you have is a Battle Rifle, and you have no grenades, and you spotted someone walking out of a door. You fire immediately thinking he would simply walk forward and let you have the kill. Instead, he turns around and he's hiding in cover. Here's what happened:

• By opening fire, you revealed your location to other players in the game
• You failed to kill the opponent
• You fired away when your opponents chances of escape is very high

What would of been a better choice is to simply let your opponent think the area is safe by letting him walk out into the open, giving you enough time to kill him before he makes his escape.
Whenever you open fire, you reveal your location to others. How you use that to your advantage is up to how you want others to play your "game". In other words, it depends on how you want your rats to fall into your mouse traps. Knowing this will help you formulate an effective killing method suited for the specific situation your in.

Cover Fire
In team games, always keep yourself in a position READY to support your teammate(s). Don't stay too close, or be too far away. Make sensible judgments as to how far you should be, and base it on your location. Look around and see where your teammate(s) will be open to fire and keep an eye on those locations. Keep track of multiple areas, and call out locations where you see someone. Furthermore, don't look at the area where your teammate(s) are already looking at unless you have a special reason to do so. Looking at the same direction others are looking at will leave other areas open to attack. Spread your team's field of view by looking at other specific areas. Covering as much area as possible will help lead your team to victory.

Setting Traps
Some positions can be used to draw attention. Locations that are well defended, and high in elevation, will help draw attention as well as provide sufficient distraction for your opponents. As long as the person in high ground stays alive, your opponent's are forced to expose themselves to get rid of him or else be forced to fight in much smaller areas. This is because of the fact that the person at high-ground has the offensive advantage. If they fail to kill the person at high ground, the opposing team will have a very hard time getting from point A to point B without getting shot at. If the team has just the right formation to cover fire from multiple areas, then your team will immediately have the advantage.
Many teams simply fail to have a good set-up, which is why these teams falls apart. Teams are best used when all the parts function together to achieve a specific goal.
It is also very easy to fall into a trap. Be sure to look for the possible signs. Be vigilant, and well disciplined. Even more importantly, never follow an enemy you are firing at into cover. Find a safer path, bounce a grenade or simply wait for him to come back out. Just because an opponent is weakened doesn't make him any less of a threat.

Breaking the Walls of the Fortress
Sometimes, you are in a bad situation when it's the opposing team with the set-up. If you're in a situation where you're simply "pinned down" and there's nothing you can do about it at the moment, don't give them free kills. And make sure your team mates duck in cover as well. You have two options. Wait for the opposing team to reposition themselves "which is the point of which their formation is weakest." That moment is when they get tired of their positions and simply decide to cover other possible openings. The other option is to cause "mass hysteria" by attacking in such a way that forces them to reposition. Such as throwing grenades, or firing off Battle Rifle Rounds to force them into hiding. While this happens, push in. But don't push in too fast and have your team die all at the same time. Forcing your enemy to move into locations where they are weak is your best bet. Don't let it happen to you when you have the advantage.

Checkmate
In team games, and even FFA games, one of the worse situations to be in is to be in a fight where two people have the advantage against, and over you. Think about everyone, or at least your target's position and consider possible locations where you can kill him/her in a double "team" situation. Time your movement and read your opponent's path. And determine whether anything can draw your target's fire away from you. This way, you can reduce the amount of damage you can possibly get, and at the same time maximize the amount of damage your opponent will receive. Your target's only option is death, if you do this well enough.

Escape Routes and Cover Always consider an alternate destination, or an escape route wherever you go. Think about whether or not your opponent can predict your path or whether your opponent(s) will be able to hit you wherever you plan to go.
The reason "newbie" players are so easy to kill is the simple fact that they don't know how to take cover or where to go if they are under fire. And not knowing where to go makes you a "sitting duck".
In these cat & mouse situations, luring your "cat" to the "dogs" will make you one very safe mouse. Sometimes, you have to move in such a way that exposes the person that's chasing you to open areas. This is a beneficial tactic if you have a sniper in your team.
Anything that stops or draws fires away from you will be to your advantage. Find a way to make it happen.
Things to consider:

• Predictability, likeliness of your predator(s) to know where your going to go.
• Opportunity, likeliness of your predator(s) to have their fire stopped completely or drawn away.
• Rebound, knowing where to go after to gain the upper hand.
• Cover, going from A to B while receiving the least possible damage.

Bad Spawns
If you are not already dead, you have only a few options. Turn it around yourself, or wait for others to make it safe for you. As much as you can, don't give away a free kill if you know it's too hot out there. You must think about the capability of your spawning weapon before opening fire, or you'll be in lots of trouble. Your best bet is to wait until the situation has changed, and to play as safe as possible. There is no guarantee, only opportunity for your survival and the opportunity to win.

Conclusion
Halo is a lot like chess when it comes to advanced movement, positioning, and tactics. Read the game, and the game is yours for the win. Apply your knowledge, and it becomes skill. Practice, but practice correctly. Have confidence, don't fret when you're in fear or doubt. Perform your best and take breaks. You will become a better player. Simply apply this information, and anything that comes your way for anything, and you will improve significantly.



Halo 3 Advanced Positioning and Tactics - halowiki.net

to much to read but all of a sudden i have an urge to play chess

sounds like a rip off of overswarm, just applied to h3

My brain hurts now but yeah if you read it all this will help you play smarter