Polish Business Documents

I have a collection of business-facing documents—proposals, memos, and short reports—that need a careful rewrite. The content is solid, but small grammatical slips and a few awkward sentences are distracting from the message. Your task is to go through each file, correct every language error, and reword where necessary so the information reads cleanly and with absolute accuracy.
Please preserve the existing structure, headings, and branding; I only need the text itself refined. I will supply editable Word files and would like the finished documents returned in the same format, ideally with Track Changes visible so I can review every adjustment alongside a final clean copy.