Here are some tips for you (from my knife post -
http://forums.bf2s.com/viewtopic.php?id=6764)
1. Play on maps where the flags are close together. When you die it's closer to get to the enemy flags.
2. Be a spawn whore knifing git. Everyone will hate you, but you cant expect the enemy to approach you to let you knife them. Hang around the enemy spawn point, and if you see them, knife them.
3. Switch to knife. Dont be tempted by that "extra couple of points for a machine gun kill", you need to get knife kills not machine gun kills for the medal.
4. If you are spotted from a distance and get shot at, run off around a corner. Most people will see you running, assume you are about dead and run after you. Knife them when they turn the corner.
5. Play on a 32 player server. Unless you are Rambo, a 64 player server is too crowded and you will get mowed down, a 16 player server doesnt have enough knife fodder. This is personal choice, find what you are comfortable with.
6. If you are halfway through the round with 1 knife kill, dont bother. Switch back to your main weapon and enjoy the rest of the round because you arent going to get your medal.
7. Be devious. Hide around corners, sneak up behind people. Drive a jeep behind enemy lines and approach them from behind. Do things that people wouldnt expect. Running through an open space with a knife in your hand towards a four man squad armed with machine guns is not a good idea.
8. Be patient. Wait until that person you are running behind stops, get your knife aimed for their torso, and bam! Knife them.
9. You will get killed. Lots. Accept it and keep your cool.
10. Medic! I found it best playing a medic because you can get extra points by healing and reviving to keep your score up, keep your own health up, and you dont tire easily when giving chase.
11. Luck. Sometimes a combination of skill, luck and noobs will get you this medal. I knifed a guy, his mate came in and revived him, so I knifed both of them. A bit of luck like that gets you almost halfway to your basic / veteran medal.
12. Perseverance. If you are losing your cool, play a few rounds with the gun. Then swap back to knifing.
13. Knowledge. Know your maps and your spawn points. If you arent sure where people appear, and you dont know your way around the maps, it's going to be hell.
14. Head for where you think the front line is. It will be where most victims await your cold steel.
15. UAV is vital. If you have a good commander, he will be constantly plaving the UAV where the most enemy are. If you are also in that area, you can see where your next knife kill waits.
16. Watch where people are facing. The mini map is invaluable in this respect. If you run around a corner and someone is facing you with a machine gun, it's going to be painful. If you wait a few seconds until they turn around, chances are you are in for a knife kill.
17. Keep your cool. I already said this, but it's a definate one to keep at the front of your head. If you panic when you are in someones face with a knife, you will get shot. Remember that if someone comes up to you with a knife, you panic because you know it's one stab one kill (in most cases).
18. Spacial awareness. In close combat when you have been spotted, spacial awareness is key. If your enemy if running around trying to locate you, if you are more spacially aware than they are, the kill should be yours.
19. Bunny Hop. I'm probably going to get loads of grief from people for saying this, but it you are running across an open space towards someone, or giving chase across an open space, and they turn around... are you going to stand there and take a round of lead like a man, or are you going to do everything you can to close those last couple of feet and take them out with your knife.
20. Go one servers where the admins dont get miffed because you keep knife killing them and ban you. Oh yeah, I've been there.
Good luck.
