Which unit does the 1st assistant director belong to?

The 1st assistant director (1st AD) is a crucial role within the director's unit in a film production. This position is responsible for managing the shooting schedule, overseeing the cast and crew on set, and ensuring that the director's vision is executed smoothly. The 1st AD acts as a liaison between the director and other departments, helping to communicate the director's needs and keeping the production organized and on track.

By being part of the director's unit, the 1st AD is closely involved in the creative process, facilitating the flow of communication and often making decisions that impact the daily operation of the set while aligning everything with the overall direction of the film. This role is fundamental in maintaining the pace of production and addressing any potential issues that may arise during filming, enabling the director to focus on the artistic elements of the project.