1940, the US military established the model scheme of Willis Ma. Colleagues used some characteristics of Ford and Bandtam for reference, redesigned the Willis MB off-road vehicle, made the earliest standardized Jeep 1945, and the world-recognized first Jeep civilian vehicle CJ-2A came out, thus the Jeep civilian vehicle began. 1946, Jeep all-steel wagon, the first all-steel wagon in the field of automobile industry, was born and became a classic model for building family cars with driving comfort as the core. 1948 Jeepster "Jeep Boy" came out, which has the prototype of multi-function vehicle and created the concept of life-style vehicle. In the same year, CJ-3A, which paid more attention to details, came out and evolved into the well-known Jeep Universal. 1950, Jeep officially became a trademark and became a legendary brand of off-road. 1953, Kaiser bought Willis-Continental Automobile Factory and renamed it Willis Automobile 1954. CJ-5 appeared and became the first choice for people's cross-country activities at that time. This car has been selling like hot cakes in the 1980s (1962), and the first JeepWagoneer station wagon with automatic transmission was launched, which is the originator of modern multi-purpose sports vehicles (SUVs). In the same year, Willys Motors officially changed its name to Kaiser Jeep Corporation1965, and the brand-new 1966 Super Wagoneer became a popular jeep model when it was unveiled that year. 1966, 1967 jeep commando, with station wagon, four-door convertible, minivan, two-door convertible and other styles. She was inspired by the popular Jeepster series in 1960s. 1970, American automobile company acquired Kaiser Jeep, and the successfully expanded Jeep product line created a new image for Jeep in the 1970s-it was interesting to drive the Jeep up the mountain and into the sea. 197 1 year, Jeep launched a limited edition Renegade II model, namely Rebel. In fact, it is a customized model of CJ-5 four-wheel drive model, and won the championship of cross-country and cross-country endurance race in previous years. 1973, the full-time four-wheel drive system was first applied to Jeep Wagoneer series 1974. On the basis of Wagner model, Jeep family gave birth to the dynamic Cherokee, which became one of the legendary models in off-road history. Jeep Cherokee in 1984 not only has two doors and four doors to choose from, but also has two four-wheel drive systems to choose from, namely part-time 4wd system () or switchable part-time 4wd system (choose Trac). 1986, 1987 herdsman appeared, replacing CJ-7 as the legend of Jeep's high-end and professional off-road vehicle. 1993, the Grand Cherokee came out and became synonymous with high-end four-wheel drive off-road vehicles. 1996, 19996 herdsman (shepherd), its popularity has become a new milestone in the history of cross-country. The Grand Cherokee (1999, 1999), which was redesigned in 2005, hit the high-end off-road vehicle market with a brand-new model. Jeep herdsman Rubicon successfully integrated Jeep herdsman, the best off-road vehicle, with the new Jeep WranglerUnlimited, which has more space and more functions. 2006-Jeep Commander, a high-end model with three rows and seven seats, came out.