Now Im having a much better luck with my BT-7. It's a great tank suitable for commanding initiative. Most kill I've ever had in one battle with it is 5 enemy tanks.
It's a very good tank though with just barely adequate gun but its speed enables it to dictate where and when to engage.
Of course with its thin armor and light gun you can't go lone wolf on this one. But when properly used it's a very good tank capable of assisting friendly heavier tanks and making some kills on its own.
You just have to know where to place it but the tanks helps that a lot by having powerful engine(if upgraded) thus high mobility. Shoot a few, change position and always aim at side armor instead of frontal. Rinse and repeat.
I downloaded this as my custom BT-7 skin
And add the following wording,