2 sentences

1. 那场战争中发生了惨无人道的屠杀。

   nà cháng zhàn​zhēng zhōng fā​shēng le cǎn​wú​rén​dào de tú​shā.

   Atrocious massacres occurred during that war.

   Source: Dong Chinese Dictionary

2. 那场战争中发生了一场惨无人道的大屠杀。

   nà cháng zhàn​zhēng zhōng fā​shēng le yī cháng cǎn​wú​rén​dào de dà​tú​shā.

   A brutal and inhumane massacre occurred during that war.

   Source: Dong Chinese Dictionary