StrayDog: Kerberos Panzer Cops (1991)
StrayDog: Kerberos Panzer Cops, lit. "Kerberos: Watchdog of Hell", a 1991 Japanese film directed by Mamoru Oshii and starring Shigeru Chiba and Yoshikatsu Fujiki. It is the first theatrical film related to the Kerberos saga manga Kerberos Panzer Cop, the second one being Jin-Roh (1999).
More at Wikipedia.