Battlefield 3 - How to get Combat Efficiency Ribbon

The 'Combat Efficiency Ribbon' is one of the confusing ribbons to achieve. The requirement says 'Get 3 Kill streaks'. In BF3 a kill steak starts when you kill 5 enemies without getting killed. After the streak has started, every further kills will grant you a 'Streak Bonus'

5 kills -> streak started
6 kills -> first streak bonus
7 kills - >second streak bonus
8 kills -> third streak bonus + RIBBON
9 kills -> fourth streak bonus
10 kills -> fifth streak bonus
11 kills - >sixth streak bonus + RIBBON

If you get killed, the streak is reset. ie for example lets say you got killed aftrer 7 kills. Then you have to start over again and get 8 more continuous kills to get it.

Remember - this is applicable to PC only. I do not know how this works in XBOX360 or PlayStation 3

PS: Some people claim that to get a streak you have to kill 8 people and to get the ribbon you have to do it thrice (8*3 kills). This is wrong. Look at the image below. I only have 14 kills in total and got the 'Combat Efficiency Ribbon' twice (at my 8th and 11th kills). My Bf3 skills are very poor. If it required 8X3 kills to get this ribbon, I would never get it in my life

Battlefield 3 - How to get Nemesis Ribbon

Some people find it is difficult to get the Nemesis ribbon in battlefield 3. The reason for this is many of them are not sure how to get this. In battlelog it says 'Get 2 Nemesis Kills'. What does that mean?

IN BF3, You become someone's nemesis, if you Kill that player 5 times, without him killing you in between. The other players can still kill you. Once you do that, you become that person's Nemesis.

I have searched the net to find out how to get the ribbon. There are two solutions.

1. Become a Nemesis twice.(Confirmed) ref: http://battlelog.battlefield.com/bf3/battlereport/show/28140831/2/224752992/
   - Kill two players 5 times each without them killing you
   - Or Kill the same player 2*5 times. (you can get killed after the 5th kill and this will still get the ribbon)

2. Kill 2 of your Nemesis (Not confirmed)
  - Get killed by the same person 5 times. Then kill him - do this twice (your nemesis can be two different palyers or the same player).
 - TIP: try to get into matches with low player count to increase the odds. Try Squad Daethmatch

Battlefield3 - How to view older battle reports

In Battlefield 3, the profile page shows battle reports of only a few recent matches. One way to view older reports is to bookmark the report you are interested in. However, this is not going to help you a lot as Battlelog server purges reports that are more than 3 weeks old.

So how can you see the older reports?

Well at the time of writing, battlelog DOES NOT give you an option to do this. But there is a third party site called bf3stats.com, which can help you. Create an account in this site and they will keep your battle reports for  a long time. They also show more of your stats than battlelog does.

The site basically scrapes battlelog pages to get the data. So you have to update bf3stats reports after every 20 matches, otherwise you will miss the report.

You can get custom battlefield 3 stat banners from this site. They also provide an API, which you can use to fetch bf3 stats to your application or web page.

Here is a sample battlereport from bf3stats.com