Yep, I was doing fine until there piece of shit servers disconnected me.
You ran into the same tank 3-4 times, and literally just ran in a huge wide circle around your base. Just sit tight, and move only when you have to. No unnecessary running around like MW2.
I dont like to camp, its not my thing.
You're an Defender. You should only be moving in reaction to the enemy coming (if you see someone running on the left side, or hear the alarm for the crate go by).
If i stay in one place or area it gives a sniper the perfect shot on me, and since half the enemy team is sniping thats not such a good idea.
That's why I say you should be taking cover. You have plenty of crates around objective B. Also, constantly spot. The spotting system needs to be nerfed IMHO, since I can just spam the shit out of it.