Rooster by Alice In Chains is a haunting and powerful grunge anthem that delves into the harrowing experiences of a soldier during the Vietnam War. Written by guitarist Jerry Cantrell, the song is a tribute to his father, whose nickname was 'Rooster' during his time in the war. The key themes include the brutality and psychological impact of war, the bond between soldiers, and the resilience of the human spirit. Particularly poignant moments in the song include the vivid descriptions of combat and the emotional chorus that conveys a sense of hope and endurance amidst suffering.