Everything I know about tanks, I learned from Brendan. My understanding is that tanks are big and made of metal and that some people like them quite a lot. So huzzah! After being in paid beta for a while, War Thunder‘s tank-adding expansion Ground Forces has launched into open beta. Watching the launch trailer, I am intrigued to discover that the pokey-out bit on a tank is actually a big gun, and that tanks are used for fighting.