The German Red Cross (Deutsches Rotes Kreuz) in the Zollernalbkreis, Baden-Württemberg, operates professional as well as volunteer services, using a variety of vehicles.
Krankentransportwagen – Ambulances
Rettungswagen (RTW) – Emergency Ambulance
Mannschaftswagen (MTW) – Personnel Carrier
Please note that these are scans from old 35mm slides from my archives, with resultant deterioration in colours and sharpness.