War Thunder has changed a lot since I last played.  Back then, you aimed by elevating your gun, estimating the range and selecting the correct tick mark to put shell on target.  Now it looks like you just put the aiming circle on the target and the gunner makes the range and elevation calculation automatically.,(reply>), That's either a crew skill or a recent change. I stopped playing about a year ago and you had to fire a ranging shot to hit long range targets. Close to medium, not so much. It's also not a problem with more modern tanks