1941 Willys-Overland Jeep MB

In July 1940, the U.S. government launched a bid aimed at top automotive manufacturers in the Federation. The goal was to design a lightweight, nimble 4x4 off-road vehicle within a very short timeframe. The requirements included:

• Load capacity of up to 600 pounds (272 kg)
• Wheelbase under 75 inches (190 cm)
• Height under 36 inches (91 cm)
• Speed range from 3 to 50 mph (5 to 80 km/h)
• Rectangular body design
• Four-wheel drive with a two-speed transfer case
• Foldable windshield
• Seating for three passengers
• Functional lighting system
• Gross weight under 1,300 pounds (590 kg)

Only two companies, American-Bantam and Willys-Overland Motor Company, initially responded to the request, despite over 130 manufacturers being contacted. Later, Ford also entered the competition. While none of the prototypes fully met the military's stringent requirements, the Willys-Overland submission emerged as the winner.

With minor adjustments, the Willys Quad was refined into the lighter MA (Military Model A) and, eventually, the final MB version. Structurally, the MB was a simple, small off-road vehicle, essentially a platform frame with a front "box" housing the engine. It featured a 2.2-liter 4-cylinder engine producing just over 50 horsepower, coupled with a four-speed gearbox, a two-position transfer case, and permanent four-wheel drive.

By August 1941, the U.S. Army officially adopted the Willys MB for military operations. Nicknamed the "Jeep" by military personnel, the origin of this name remains debated. Some theories suggest it derived from Oklahoma oil workers' slang, while others link it to Eugene the Jeep, a character from the Popeye comic strip. The most plausible explanation ties the name to the pronunciation of “G” and “P,” military shorthand for "General Purpose."

Before World War II ended, more than 630,000 Jeeps were produced, split between Willys-Overland and Ford under license. In June 1950, Willys-Overland registered "Jeep" as an official trademark. General Dwight D. Eisenhower, Supreme Commander of Allied forces, famously stated that without the Jeep, the Allies could not have won the war.