Spartan Soldier Holding Weapon — Green, Dramatic, 3d Render

1600 × 1200

Master Chief and Cortana — Black

1920 × 1080

Squad of Soldiers — Green, Dramatic, Digital Art

1600 × 1200

Solo Soldier in Helmet

1920 × 1080

Blue-skinned Alien Woman — Blue, Serious, 3d Render, Spaceship

2560 × 1440

Spartan Helmet Close-up — Blue, Dramatic

1680 × 1050

Reptilian Alien in Armor

1920 × 1080

Soldiers in Powered Armor — Blue, Tense

1600 × 900

Master Chief in space combat

1280 × 720

Master Chief in futuristic armor

1280 × 800

Two Soldiers in Cockpit — Black

1920 × 1080

Three Characters in Combat Gear — Black, Dramatic

1680 × 1050