Nothing ever happens in a vacumm. As I am locking down a redesign I go on a hunt for visual inspiration while I sketch. It's my favorite part of the design process and it usually nets some beautiful images in their own right. With this design for Project: Rooftop, a sketch inspired by a remembered closeup still from Howard Hughes's film Hell's Angels started the ball rolling.
The stars in the shape of the A was inspired by the personal style and design of Gen. George S. Patton. He was a man who was very aware of the costuming of war and loved a bit of high polish flare.
He designed the last US Army Saber, a (rejected) uniform for the Tank Cavalry and oversaw the dress code personally of his Third Army. If there was a General in the Army in 1941 who would have a lot to say about what Captain America wore, it would be Patton. From there I fell down the research rabbit hole. Enjoy.