"This Is War" is a song by the American rock band 30 Seconds to Mars, released in 2009 as part of their album This Is War. The song features themes of struggle, resilience, and the human spirit's fight against adversity. Its powerful lyrics and anthemic sound have made it a popular choice for motivational contexts. The track is known for its cinematic quality, combining orchestral elements with rock instrumentation. The music video, directed by Bartholomew Cubbins, showcases various individuals sharing their personal battles, emphasizing the universal nature of conflict and the importance of perseverance in overcoming challenges.