sentences:  Generals, in his opinion, need to be aware that future U.S. wars will not involve one large enemy army but rather smaller, difficult-to-target groups of insurgents.He states that the United States needs generals to be more creative, as well as have a better understanding of military history, international relations, and foreign cultures.Even before he published the influential "Armed Forces Journal" article, Yingling had made his dissatisfactions known in interviews conducted for the Army's oral history archives.