Ds. 3300 – General Dynamics F-111 Aardvark

An American variable-sweep wing fighter-bomber that was used by the United States Air Force (USAF) and the Royal Air Force (RAF) during the Cold War. It was known for its versatility and long range.

Ds. 3400 – McDonnell Douglas F-4 Phantom II

An American supersonic jet fighter that was widely used by the United States Navy (USN), the United States Air Force (USAF), and numerous allied air forces during the Cold War and Vietnam War.

Dr. 3500 – T-55

A Soviet medium tank that was introduced in 1958. It featured improvements over the T-54, including a new gun stabilization system and a more powerful engine, and became the mainstay of Soviet armored forces for many years.

Dr. 3600 – Chieftain tank

A British main battle tank that was introduced in 1967. It featured a powerful 120mm gun, advanced armor protection, and a sophisticated fire control system.

Dr. 3700 – Leopard 1

A German main battle tank that was introduced in 1965. It was known for its speed and maneuverability, and featured a powerful 105mm gun.

Dr. 3800 – M60 Patton

An American main battle tank that was introduced in 1960. It featured a powerful 105mm gun and a new suspension system, and became the mainstay of American armored forces for many years.

Dr. 3900 – T-62

A Soviet main battle tank that was introduced in 1961. It featured a powerful 115mm gun and a new composite armor design, and became a significant upgrade over the T-55.

Dr. 4000 – AMX-30

A French main battle tank that was introduced in 1966. It featured a powerful 105mm gun and a new suspension system, and became a popular export tank.

Dr. 4100 – Challenger 1

A British main battle tank that was introduced in 1983. It featured a powerful 120mm gun, advanced armor protection, and a sophisticated fire control system.

Dr. 4200 – Leopard 2

A German main battle tank that was introduced in 1979. It featured a powerful 120mm gun, advanced armor protection, and a sophisticated fire control system, and became one of the most advanced tanks in the world.