sentences:  Nevertheless, much of Engesa's marketing efforts for the Jararaca were stymied by a combination of a trend towards heavier wheeled armored fighting vehicles and a surplus of cheaper light armored cars available to the armies of developing nations, particularly during the final years of the Cold War.By the 1960s and 1970s, most modern armies had recognized a niche for armored vehicles in secondary battlefield tasks, such as providing information and rear security for larger mechanized formations.This trend to "mechanize" auxiliary land warfare elements placed an emphasis on the use of light armor to fulfill roles outside the traditional armored doctrine of maneuver and combat.