Sure it is required. Heck, look at me for example
Not everything in military flying can be trained, since not everyone can do it. It's not the training, you also have to "have it" or not, you have to be better than the average person, or not. And whether anyone likes it or not, that's why not everyone.....even with training.....can pass the training needed for tactical flying. Some don't have the hands, the ability to think quickly, the ability to be cool under severe stress. The tactical flying starts with the proper person coming into it, and then the training is applied. It doesn't necessarily work the other way around.
I do find it mildly amusing that those who aren't military aviators and haven't been through the program, can speak with authority on how easy it would appear to be and how its "just a matter of a little training." :banghead: