两军对垒 meaning in English

the two armies duly meet and face each other standing in readiness.; the two armies throw up defenses

In this kind of warfare , instead of forming in a crowd to attack a crowd , men disperse in small groups , attack singly and at once fly , when attacked by superior forces , and then attack again , when an opportunity presents itself
这种行动不是两军对垒作战，而是一方把军队分散开来，小股军队单独行动，袭击敌人，遇到敌方大部队攻击时，立刻就跑，一有机会，又进行袭击。