As you probably noticed from the tons of edits I made recently, I finally finished the navbox for tank pages. It looks like this:
(Well, not quite. The forum made everything left justified, but I'm sure you've seen it on the tank pages.)
Now, you may be wondering, how do I add one to a new tank page? It's actually pretty easy. In source mode, type {{Navbox}} at the end of the page on its own line. You could also use the "Add Template" button and search for Navbox, but just remember to put your cursor at the bottom of the page, or the navbox will show up somewhere in the middle of your text.
We also have the tank infobox I added earlier. I plan on adding level requirement lines to it eventually. It's not a high priority to add rank requirements just yet, but for future reference, find the image file name of the ranks you want from this page, then paste them into the correct box. The format for adding images is [[File:filename.whatever|text you want to appear]].
Later, I will make navboxes for maps in the game, upgrades, and game modes.