Outmanned by a nuclear power in the largest land war in Europe since 1945, Ukraine’s front line is increasingly held by machines.

The Republic didn’t win battles with clones alone. It relied on an enormous arsenal of walkers, tanks, starfighters, and troop carriers designed for every possible battlefield. Some became iconic.

Russia launched its full-scale invasion of Ukraine four years ago, and the fighting continues. Here's a look at where the war ...