When he relates his memories to the boys for their history assignment, he recalls that there were amusement park rides and that he and Ned defeated the entire Viet Cong by themselves, while on horseback. However, his memory of the events are heavily distorted.
Jimbo was a helicopter pilot in the Vietnam War where he met his lifelong buddy, Ned Gerblanski. Jimbo riding a horse during the Vietnam War. 7.3 South Park: The Fractured But Whole.7.1 South Park Let's Go Tower Defense Play!.