2 sentences for 战区 (zhàn​qū — theater)

1. 他被任命为该战区的最高司令官。

   tā bèi rèn​mìng wéi gāi zhàn​qū de zuì gāo sī​lìng​guān.

   He was appointed as the supreme commander of the theater of operations.

   Source: Dong Chinese Dictionary

2. 救援物资被源源不断地送往局势紧张的战区。

   jiù​yuán wù​zī bèi yuán​yuán​bù​duàn de sòng​wǎng jú​shì jǐn​zhāng de zhàn​qū.

   Relief supplies were sent in a steady stream to the tense war zone.

   Source: Dong Chinese Dictionary