The armed forces were prepared to repulse any attacks.

武装部队已准备好击退任何进攻。

《柯林斯英汉双解大词典》

Unless we repulse the enemy's attacks and defeat him, even places held by the guerrillas will come under enemy control, and then it will be impossible to establish base areas.

就是游击战争控制的地方，如果不粉碎敌人的进攻，不战胜敌人，自己控制的地方就要变成敌人控制的地方，也无从建立根据地。

youdao

Unless we repulse the enemy's attacks and defeat him, even places held by the guerrillas will come under enemy control, and then it will be impossible to establish base areas.

就是游击战争控制的地方，如果不粉碎敌人的进攻，不战胜敌人，自己控制的地方就要变成敌人控制的地方，也无从建立根据地。

youdao