Almost every flag in the extensive collection of world flags is recognizable as rectangular. But among all the nations, there are two exceptions—nations with perfect squares for their official flags.

ALBANY, New York – ALBANY, N.Y. – Some of New York’s 2,200 battle flags – the largest collection of its kind in the country – are now featured in a virtual video tour of the New York State Capitol.

Battle-stained flags that survived ferocious fighting fill drawers in cabinets inside the Pennsylvania Civil War Battle Flag Education Center in Harrisburg. Each one serves as a memento of a fight to ...