Placing your HeadQuarters is the biggest part of your base design, because your main goal is to protect it. For the lower HQ levels, the best place is to have your HQ on the right edge of your base, next to your boats so it’s easier to protect with lower level defences.
HeadQuarters Layout 1
For the higher HQ levels (Around 10-11+), It’s better to have your HQ in the center. Once you are in the higher levels, having your HQ next to your base becomes a overall weak layout when it comes to Tanks. When your HQ is in the center it’s easier to defened if you have strong defences
HeadQuarters Layout 2