I wanted each squad to have an heraldic design, like a knightly order, but a complicated design would be too much to freehand on every marine so I have come to a compromise. Each squad will have a geometric design using blue and white, which will be painted on the right shoulder pad. This design will also be used on any banners, shields or other areas.
For my first tactical squad I have chosen a simple diagonal bisection from top left to bottom right, but I could do all sorts of things; vertical bisection, horizontal bisection, quartering, etc...
Shoulder pads done on these two marines.
Shield done on the sergeant.