The incident occurred in the parking lot of a bar near Avenida Granada and Avenida Victoria and was reported shortly after 1 a.m., said a spokesperson for the Orange County Sheriff's Department.
According to an initial investigation, the Marines attempted to break up a fight involving three other people. One of those people was armed with a knife and stabbed the service members, the sheriff's spokesperson said.
The Marines each suffered non-life-threatening injuries and were transported to a hospital for treatment. Their identities were not released.
Three individuals were detained as part of the investigation. Authorities did not disclose their names.