6 sentences

1. 他在越战中服过役。

   tā zài Yuè​zhàn zhōng fú guo yì.

   He served in the Vietnam War.

   Source: Dong Chinese Dictionary

2. 他原本是这家豪门的厮役。

   tā yuán​běn shì zhè jiā háo​mén de sī yì.

   He was originally a servant for this wealthy family.

   Source: Dong Chinese Dictionary

3. 我们要努力拼搏，毕全功于一役。

   wǒ​men yào nǔ​lì pīn​bó, bì quán gōng yú yī yì.

   We must strive hard to finish the whole task in one fell swoop.

   Source: Dong Chinese Dictionary

4. 在古代社会，战俘往往被迫终身为役。

   zài gǔ​dài shè​huì, zhàn​fú wǎng​wǎng bèi​pò zhōng​shēn wéi yì.

   In ancient societies, prisoners of war were often forced into lifelong servitude.

   Source: Dong Chinese Dictionary

5. 这一役打得非常艰难，双方都损失惨重。

   zhè yī yì dǎ de fēi​cháng jiān​nán, shuāng​fāng dōu sǔn​shī cǎn​zhòng.

   This battle was hard-fought, and both sides suffered heavy losses.

   Source: Dong Chinese Dictionary

6. 他在艰苦的边疆地区服役了整整三年。

   tā zài jiān​kǔ de biān​jiāng dì​qū fú yì le zhěng​zhěng sān nián.

   He served in the military in the harsh border regions for three whole years.

   Source: Dong Chinese Dictionary