Look Closely at Carroccio Standards

Don't know if anyone else has noticed this, but theres a misterious floating box in the bottom cornor of the flag in the carroccio standard, which levitates magically back and forth. The box looks like it is decorated with the skin for the model of the standard. I noticed this as Venice, on low graphics settings.

I wonder if the Holy Cross Standard unit has one. The miracle of the floating box will inspire Christian soldiers to victory!

I never noticed that before. Maybe that's really why they protect the standard so fiercely.