Meaning of the word "truth is the first casualty of war" in English

What does "truth is the first casualty of war" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

truth is the first casualty of war

US /truːθ ɪz ðə fɜːrst ˈkæʒuəlti əv wɔːr/
UK /truːθ ɪz ðə fɜːst ˈkæʒuəlti əv wɔː/
"truth is the first casualty of war" picture

Idiom

a proverb meaning that in times of conflict, accurate information is often replaced by propaganda and lies

Example:
With so much propaganda on both sides, it's clear that truth is the first casualty of war.
Journalists often remind us that truth is the first casualty of war when reporting from the front lines.