Halo 4: Forward Unto Dawn: Squad
From Halopedia, the Halo wiki
Squad is a short promotional piece for the Halo 4: Forward Unto Dawn webseries. It depicts the newest members of Hastati Squad at Corbulo Academy as they talk about joining the UNSC. It was released on September 28, 2012 on Halo Waypoint and on YouTube by MachinimaPrime.  The interviews featured in the short are snippets from the longer interviews of each cadet featured in the bonus content of the Special Edition of Halo 4: Forward Unto Dawn.
Parts of this short are used in the "Prelude" segment featured in the DVD and Special Edition version of the film.
Opens to a computer screen. Text appears:
CORBULO ACADEMY OF MILITARY SCIENCE
Cuts to a row of a cadets, standing at attention with their assault rifles.
Cuts to April Orenski inside a room, sitting on a chair.
Cuts to April Orenski standing in front of the row of cadets.
Cuts to the row of cadets: starting from Thomas Lasky to the next cadet.
Pans to the next cadet, who is revealed to be Junjie Chen.
Cuts to Chen inside a room, sitting on a chair.
Cuts to Chen standing at attention, staring blankly at the ground.
Cuts to Chyler Silva sitting inside a room.
Cuts to Chyler Silva in the row of cadets. April Orenski walks past her.
Cuts to Dimah Tchakova in the row of cadets.
Cuts to Tchakova sitting on a chair inside a room.
Cuts to Tchakova stepping up to the row of cadets. Chen follows her.
Cuts to Tchakova inside the room.
Tchakova smiles. Cuts to Walter Vickers in the row of cadets. "
Cuts to Vickers inside a room, sitting on a chair."
Cuts to Vickers in the row of cadets, looking at the other members.
Cuts back to Vickers inside the room.
Cuts to Michael Sullivan inside a room.
Cuts to Sullivan in the row of cadets. Cuts back to Sullivan in the room."
Sullivan smiles nervously. Cuts back to Sullivan in the row of cadets.
Cuts to Thomas Lasky inside a room.
Cuts to Lasky in the row of cadets.
Cuts to Orenski staring at the cadets.
Cuts back to Oresnski inside the room."
Cuts back to Orenski and her squad.
The cadets ready their assault rifles. Cuts to black.