Wúshù xiānliè yùxuèfènzhàn, cái huànlái le jīntiān de hépíng.
Countless heroes fought desperately in battle to win today's peace.
Tips
usage
浴 literally = to bathe — so the image is 'bathed in blood, fighting hard'. The idiom is reserved for literal or figurative life-and-death battles; overuse in trivial contexts sounds melodramatic.