The Raging Sandwich

S-1 plane (for air-to-air combat)

S-2 plane (for low altitude bombing)

S-3 plane (jet engine technology given by United Kerbin [UK], for eliminating large air or ground targets)

B-1 (for base assaults and large ground targets, slightly slower than UK's B-1 but can also outrun most fighter planes)

Manned Attack System (Used for ground assaults)

Unmanned AM (An anti-missile defense system. Used for taking down incoming enemy missiles.)