Post-Acquisition

As for Pre-MBA Analyst/Associate levels, I am sure they are involved in a lot of deal sourcing, pre-acquisition due diligence etc, but what I'd like to find out is how involved are they in post-acquisition operational improvement projects?

Can someone give me some examples of those projects?

I'd assume one should have quite an industry knowledge to be able to engage in operational improvement projects, am I correct?

Thanks in advance.