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