I don't remember seeing this before. The red rectangles are the starting-off points for the tank units.
https://i.pinimg.com/originals/0b/1f/04/0b1f043f10459c31b8025f0e57989c3a.jpg
"Sometimes things that are not true are included in Wikipedia. While at first glance that may appear like a very great problem for Wikipedia, in reality is it not. In fact, it's a good thing." - Wikipedia.
