I suspect they won’t be able to use the tanks to their full advantage without training. It takes a good general to use the weapons he has. The tanks require a huge logistics chain with constant tankers ferrying fuel to the front. The tanks will not run for long without maintenance. They may get some use out of the tanks, but they won’t be invading Saudi Arabia with them. The tanks are vulnerable to air attack and the fuel trucks would be smoking hulks.
They have captured fighter jets as well, months ago. I haven't heard that they've been able to use them. They will never be able to maintain the big ticket items, so they will not be able to use them. But I would be concerned with them scrapping them and selling the parts to North Korea or someone else that we would rather not get them.
“But I would be concerned with them scrapping them and selling the parts to North Korea or someone else that we would rather not get them. “
Having been in military technology production for an entire career I have a good view of what you can and can’t do with a piece of hardware. Anything ISSIS captured will not be very useful to anybody. As you point out it won’t be working for long. It isn’t top of the line technology and even if it is almost nobody can take a piece of complex hardware and duplicate it. (Much of it is difficult to build correctly when you own the technical data package and have access to the people who designed it.) But on top of that you have to have an operator who is trained and most things are part of systems designed to work together. All the components must work and that means a lot of people working together. Imagine the Mongol horde captured a bunch of radios and radar sets. It’s almost that bit a gap between ISSIS and a trained, practiced and logistically supported military. They aren’t winning because they’re sophisticated. They are probably wining because high ranking Iraqis want them to win and have betrayed their own military.