The service flag was authorized by the US department of defense during WWI for families to display when they had someone serving in the Armed Forces. The blue star represented hope. There is also one with a yellow star that represented sacrifice. Next to it hangs a 48 star flag.

Stock photo: The service flag was authorized by the US department of defense during WWI for families to display when they had someone serving in the Armed Forces. The blue star represented hope. There is also one with a yellow star that represented sacrifice. Next to it hangs a 48 star flag. was taken by photosbysonshine .