you cant just knife but you go to the back of a player and press RB (meele) you will
perform a small assassination clip and then you will get an assassination meddle on the bottom left of your screen.
No, there is no armor in Halo 3 that has a knife in the shoulder.
You have to be a general, and you can only get the knife on the right shoulder
it is on the chest piece of grenedier
The only way u can knife someone in halo reach is if u assinate them, which were u sneak up behing ur enemy and hold down the B button.
Rb bunts with gun but if you get behind an enimy and hold it you will do an assasination whick that is the only way to use your knife.
It should be standard on the right security shoulder.
It's called a Kukri knife and you cannot use it. Unless there is some kind of mod or something like that.
The only way to use your knife on Reach is when you assassinate something and your spartan might use his knife. sometimes he will use a weapon like when you have the energy sword he will grab you and stab you with it and then throw you.
On your armor, and can only be used when preforming an assassination on an opponent when behind them and then holding down the "B" button
Call of duty is more realistic than halo and contains more blood. Call of duty also allows you to knife so in many ways halo is more appropriate but it doesn't necessarily mean its more fun.
You can buy the shoulder, but you cannot use the knife, it is purely for looks. They are part of the Security armour set. You unlock it at General rank and can see it at Brigadier. There's Left and Right. Left is mirrored and has no knife, and costs 70,000 credits. Right has the knife, and costs 270,000, presumably for being incredibly awesome.
No, because the BR is a futuristic weapon, is is far superior to a mere AK-47. A similar comparison would be comparing a butter knife to an electric turkey knife.