yes you can

Only one man piloted a Spitfire, this is the case with all fighter aircraft. -Two men are usually only required in aircraft with complicated armament systems or multi engines.

the SR-71 Blackbird can reach speeds in excess of mach 3(3500+km/h). it does not carry any weapons or armament of any sort as it is a reconnaissance aircraft

An armament is a body of forces equipped for war.

Armament is military weapons and equipment. All the military forces and war equipment of a country. It is used to inflict damage or harm to living beings.