About: Question, I want to know what special way the director used to shoot Lieutenant Dan without legs.

The way to cut the ribbon for movie stunts is to cover the legs with a green screen, and then change the green screen into other pictures through post-film processing.

The visual effect of ILM (Industrial Light Magic) is relatively easy to achieve at present. Firstly, the motion control camera is used to shoot two scenes, one with people and the other with empty scenes. In post-production, a mask will be created to roughly remove the leg, and a 3D animator will create a wound bandage for the broken leg. Finally, the synthesizer will add all the elements and modify them to synthesize the final picture. You should remember the scene when the doctor picked up Captain Dan. There are many scenes showing broken legs, but many of them are covered by clips.