High Quality Content by WIKIPEDIA articles! The Sd.Kfz. 251 (Sonderkraftfahrzeug 251) half-track was an armored fighting vehicle designed and first built by Hanomag company during World War II. The largest and best armored of the wartime half-tracks, the Sd.Kfz. 251 was designed to transport the panzergrenadiers of the German mechanized infantry corps into battle. Sd.Kfz. 251s were the most widely produced German half-tracks of the war, with over 15,252 vehicles and variants produced in total by various manufacturers, and were commonly referred to simply as "Hanomags" by both German and Allied soldiers.