Nicholas Drummond on Twitter: "The RAF follows the same structure as the other two services. Generally, all three services use three types of insignia: chevron, anchor or propeller, thin ring or pip,
![Nicholas Drummond on Twitter: "The RAF follows the same structure as the other two services. Generally, all three services use three types of insignia: chevron, anchor or propeller, thin ring or pip, Nicholas Drummond on Twitter: "The RAF follows the same structure as the other two services. Generally, all three services use three types of insignia: chevron, anchor or propeller, thin ring or pip,](https://pbs.twimg.com/media/FCo75ekXsAEZdSe.jpg)
Nicholas Drummond on Twitter: "The RAF follows the same structure as the other two services. Generally, all three services use three types of insignia: chevron, anchor or propeller, thin ring or pip,
![See Every Photo From The Royal Air Force 100th Anniversary Celebrations - The Royal Family Attends The Anniversary Celebration For the Royal Airforce See Every Photo From The Royal Air Force 100th Anniversary Celebrations - The Royal Family Attends The Anniversary Celebration For the Royal Airforce](https://hips.hearstapps.com/hmg-prod/images/hbz-royal-air-force-shutterstock-editorial-9753789k-huge-index-1531229340.jpg)