They showed 'courage under fire'. [=they were brave while they were being shot at or while they were being strongly criticized]
He has 'the courage of his convictions'. [=he is not afraid to do what he believes is right]
I finally worked/got up the 'courage' [='nerve'] to tell him the bad news.
(..) or we die in the attempt! - SOLDIERS: We attack! - Attack! Attack! Attack! Blow the horns! -(HORN BLARING) -Beat the drums and have courage! For there will be no turning back! Only victory or death! What is he going to do? (EXHALES) He'll do what he always does... (..)2016 TvShow: Vikings Title: The Last Ship Season: 4 Episode 10