After the extensive ground disturbance caused by the fighting in World War I, a sea of bright red poppies
bloomed in between the trench lines and no man's lands on the Western Front. They have since become commonly used in western countries on and before Remembrance Day each year, as a symbol of remembrance inspired by John McCrae's poem "In Flanders Fields."
This song title was inspired by "In Flanders Fields," which has stuck with Judas Priest
vocalist Rob Halford since he was a kid. He explained to Billboard
: "It's amazing how sometimes messages take forever... Like 'Loch Ness' - I had that idea for twenty-five years before it was made (on 2005 album Angel of Retribution
). "'Sea Of Red' offers this sense of afterlife, hope, belief beyond the physical plane. That's very hippie-ish, isn't it?"