In-Theatre Training for Combat Replacements

[Raellus]

So, I'm working on my Task Force Inchon/Siege of Elblag stuff and I'm trying to figure out how much training U.S. Marine infantry replacements, most of whom are coming in from the USN, would have received in-theatre prior to being committed to combat operations in the summer of 2000.

This same question could also apply to other NATO militaries operating on foreign soil after the nuclear exchanges, when properly trained replacements from home countries became much rarer.

What kind of facilities/schools/methods would already be in place in Germany (or elsewhere in Europe) and/or what could be set up with the resources available after the exchanges?

Would it be too optimistic to assume that post-exchange replacements would have at least the same basic training in combat ops than pre-exchange replacement troops? If this is too optimistic, how much training would be reasonable?