Four Wheel Drive name in 1910. Besserdich and Zachow's patented full time four wheel drive system combined a lockable center differential with double-Y constant velocity universal joints for steering. In modern terms the Battleship would be considered All Wheel Drive as all FWD products featured full-time four wheel drive with a lockable center differential. The success of the four-wheel drive in early military tests prompted the company to switch from cars to trucks. In 1916 the U.S. Army ordered 147 Model B three ton trucks for the Pancho Villa Expedition. The U.S. Army ordered 15,000 FWD Model B three ton trucks as the
Four-wheel drive drive to the other axle is disconnected. The operating torque split ratio is 0:100. Four Wheel Drive (4WD) Mode - Here, depending on the nature of torque transfer to the axles, three sub-modes (below) can be defined. In addition to these basic modes there could be implementations that combine these modes. The system could have a clutch across the center differential, for example, capable of modulating the front axle torque from a Full-time mode with the 30:70 torque split of the center differential to the 0:100 torque split of the 2WD mode In 1893, before the establishment of a modern