Player Embed Code: <iframe width='500' height='300' scrolling='no' frameborder='0' style='border: none; overflow: hidden; width: 500px; height: 300px;' allowtransparency='true' src='https://www.dvidshub.net/video/embed/785898'></iframe> Download Embed Share The Classic Navy Collar Was a "Tar Flap" War.gov March 5, 2021 | 1:06 The square collar on a sailor's uniform might be its most identifiable characteristic. It serves no real purpose now, but it was very useful to those with a popular Civil War hairstyle. Video by DOD's Jon Poindexter, Daniel Zaborowski, Katie Lange and Regina Ali