Caballeros del Aire (Knights of the Air) is a highly tactical game based on the exploits of fighter pilots during World War I, such as the Red Baron (Barón Rojo). The difficulties faced by these men in their risky missions are faithfully recreated. (Translated from game catalogue). NAC was clearly improving its games and making them more varied when "Caballeros del aire" appeared. The rules were longer and more detailed than most of the ones from previous games, and even included historical background. Contents were: -64x80 cms. mapboard -counters -plastic trays for the counters -1 die -Rulebook -2 airplane control sheets Number of players: 2-4 (but ideally 2) Playing time: 120 min. approx. Difficulty: average