5 sentences

1. 敌军正在秘密调动兵力。

   dí​jūn zhèng​zài mì​mì diào​dòng bīng​lì.

   The enemy forces are secretly mobilizing troops.

   Source: Dong Chinese Dictionary

2. 指挥官正在重新部署兵力。

   zhǐ​huī​guān zhèng​zài chóng​xīn bù​shǔ bīng​lì.

   The commander is redeploying the troops.

   Source: Dong Chinese Dictionary

3. 我们没有足够的兵力抵御敌人。

   wǒ​men méi​yǒu zú​gòu de bīng​lì dǐ​yù dí​rén.

   We don't have enough troops to hold off the enemy.

   Source: OpenSubtitles

4. 趁着对方后方兵力空虚，他们发动了突袭。

   chèn​zhe duì​fāng hòu​fāng bīng​lì kōng​xū, tā​men fā​dòng le tū​xí.

   Taking advantage of the enemy's weak defenses in the rear, they launched a surprise attack.

   Source: Dong Chinese Dictionary

5. 敌我双方兵力悬殊。

   dí​wǒ shuāng​fāng bīng​lì xuán​shū.

   There is a huge disparity in strength between the enemy and our forces.

   Source: Dong Chinese Dictionary