A Kryptonian Attack Ship was an aerial combat vehicle designed for ground assault and carrying of troops.
When General Zod and his followers attacked Kandor, they used many of ships for battle against Kryptonian Hammerheads. After Jor-El stole the Growth Codex, 2 Attack ships pursued Jor-El on his pet H'Raka, but were destroyed by 2 collided Hammerheads.
Zod personally led 5 attack ships to the House of El Citadel where they destroyed the main door to gain entrance. As Kal-El's spaceship rocketed away from Krypton, Zod ordered an attack ship to shoot it down, but a Kryptonian Gunship destroyed it as Kal-El's ship Phantom Drive activated as it vanished across space.