The constant search for a more effective infantry weapon led in the1990 s to the concept of small-calibre high-explosive fragmentation grenade shells designed to burst over the heads of their targets, thereby permitting the attack of troops in 源于上世纪八十年代的对更加有效的步兵武器的不断研究得出了小口径高爆破片手榴弹的外壳设计用于杀伤目标头部的概念,从而形成了对隐藏于工事及掩体的部队进行攻击的手段。
defilade
[ noun ] the arrangement of defensive fortifications to protect against enemy fire <noun.artifact>
Defilade \De`fi*lade"\, v. t. [imp. & p. p. {Defiladed}; p. pr. & vb. n. {Defilading}.] [Cf. F. d['e]filer to defile, and d['e]filade act of defiling. See 1st {Defile}.] (Mil.) To raise, as a rampart, so as to shelter interior works commanded from some higher point.