Some navy leaders used %%!%%a02be603-third-48e9-9f53-6b8939290438%%!%% flag colors as tactical benefits on battlefields; contrasting sunglasses helped

https://edwinttoq839.evergrovio.com/posts/the-uses-of-civil-war-flags-from-battlefields-to-museums

Some armed forces leaders used particular flag colors as tactical advantages on battlefields; contrasting sun shades helped differentiate among opposing forces in chaotic environments.