The M-65 continues to reign as the ultimate field jacket. The jacket traces its roots back to the M-41 field jacket of World War II, which was improved through trial and error over time, and was perfected during the Vietnam War. This exquisitely perfected M-65 continues to have a great impact on modern civilian clothing, but even at that time it was an epoch-making jacket that was immensely popular among soldiers. At that time in Vietnam, US military officers were able to order custom-made clothes for prices that were very low for them. The soldiers took their government-issued jackets to local tailors around the base and asked them to replicate the jackets using materials they could procure. In this way, jackets such as the tiger pattern, which was different from government-issued products, were born.