The sky is red (1950)

Daniele, a 16 year old boy, runs away from boarding school after a catastrophic bombing, only to find his home destroyed and his parents dead. Alone in the world he meets Tullio, a disbanded boy who lives in an abandoned area with some girls, Carla, an eighteen year old girl who works as a prostitute, Giulia, younger and sick of tuberculosis, and a girl, Maria.