Director Rui Pedro Sousa appears in a Cameo as the University Teacher
The movie uses real audio archives from the Revolution
Carnation flower were used in 1974 by the crowd to cover the soldiers gun barrels. For the movie more than 100 Carnations were used
Some of the Army trucks seen in the movie, being from the 70s, were carried by trucks and placed on location for the depiction of the Revolution
Since the movie is based on real events and real people some locations were actual places they lived: for example the Student Residence where João Arruda used to live