The nation slowly rose from the 'ashes' of war. = It slowly rose out of the 'ashes' and began to rebuild itself.
The city was reduced to 'ashes' by the fire. = The city was burned to 'ashes'.
Their happiness turned to 'ashes'. [=their happiness was destroyed]
(..) there's a fierceness you don't often see. They'd do anything to protect their babies. Start a war. Burn cities to ash. Free their worst enemies. The things we do for love. You didn't come here to talk about our sisters. That's exactly why I came here. (..)2016 TvShow: Game of Thrones Title: No One Season: 6 Episode 8