US military life Abrams tank US Army
A US soldier scrambles into the driver's compartment of an M1A1 Abrams tank at Fort Benning in Georgia in May 2016.
  • Three kinds of Western tanks now are headed to Ukraine, and more may follow.
  • Those tanks have specific logistics needs and operational requirements — and some unique features.

Military supply officers have a tough job. Modern tanks are complex and require lots of maintenance and spare parts.

But what do you when your army is equipped with a half-dozen types of main battle tanks, each with its quirks and requirements? That's the situation faced by Ukraine.