for RA3, you may want to change the hotkey for steam community.
shift+tab cycles through unit types selected in RA3, good for micro in fights so I have it macroed to my mouse.
The pillbox is to defend against a rush and protect the refinery. You have to pay attention to LOS with pillboxes though, because they wont shoot through a building. I usually put the first one next to the ore, to be able to shoot between the buildings.
I only use pillboxes if I'm vehicle rushing, since if you have a barracks at start with soviet, it's better to make one with an engy and put the units you want in it like flak or tesla.
Turtle will only work if your opponent sucks and doesn't go after resources.
