Option Explicit
Dim FSO As Object, oFolder As Object, StrFolds As String
Dim wdDocTgt As Document, strTgt As String

Sub Main()
Dim TopLevelFolder As String, TheFolders As Variant, aFolder As Variant, i As Long
TopLevelFolder = GetFolder
StrFolds = vbCr & TopLevelFolder
If TopLevelFolder = "" Then Exit Sub
Set wdDocTgt = ActiveDocument: strTgt = ActiveDocument.FullName
If FSO Is Nothing Then
  Set FSO = CreateObject("Scripting.FileSystemObject")
End If
'Get the sub-folder structure
Set TheFolders = FSO.GetFolder(TopLevelFolder).SubFolders
For Each aFolder In TheFolders
  RecurseWriteFolderName (aFolder)
Next
'Process the documents in each folder
For i = 1 To UBound(Split(StrFolds, vbCr))
  Call CombineDocuments(CStr(Split(StrFolds, vbCr)(i)))
Next
wdDocTgt.Save
Set wdDocTgt = Nothing
End Sub

Sub RecurseWriteFolderName(aFolder)
Dim SubFolders As Variant, SubFolder As Variant
Set SubFolders = FSO.GetFolder(aFolder).SubFolders
StrFolds = StrFolds & vbCr & CStr(aFolder)
On Error Resume Next
For Each SubFolder In SubFolders
  RecurseWriteFolderName (SubFolder)
Next
End Sub

Sub CombineDocuments(oFolder As String)
Application.ScreenUpdating = False
Dim strFolder As String, strFile As String
Dim wdDocSrc As Document, HdFt As HeaderFooter
strFolder = oFolder
strFile = Dir(strFolder & "\*.doc", vbNormal)
While strFile <> ""
  If strFolder & strFile <> strTgt Then
    Set wdDocSrc = Documents.Open(FileName:=strFolder & "\" & strFile, AddToRecentFiles:=False, Visible:=False)
    With wdDocTgt
      .Characters.Last.InsertBefore vbCr
      .Characters.Last.InsertBreak (wdSectionBreakNextPage)
      With .Sections.Last
        For Each HdFt In .Headers
          With HdFt
            .LinkToPrevious = False
            .Range.Text = vbNullString
            .PageNumbers.RestartNumberingAtSection = True
            .PageNumbers.StartingNumber = wdDocSrc.Sections.First.Headers(HdFt.Index).PageNumbers.StartingNumber
          End With
        Next
        For Each HdFt In .Footers
          With HdFt
            .LinkToPrevious = False
            .Range.Text = vbNullString
            .PageNumbers.RestartNumberingAtSection = True
            .PageNumbers.StartingNumber = wdDocSrc.Sections.First.Headers(HdFt.Index).PageNumbers.StartingNumber
          End With
        Next
      End With
      Call LayoutTransfer(wdDocTgt, wdDocSrc)
      .Range.Characters.Last.FormattedText = wdDocSrc.Range.FormattedText
      With .Sections.Last
        For Each HdFt In .Headers
          With HdFt
            .Range.FormattedText = wdDocSrc.Sections.Last.Headers(.Index).Range.FormattedText
            .Range.Characters.Last.Delete
          End With
        Next
        For Each HdFt In .Footers
          With HdFt
            .Range.FormattedText = wdDocSrc.Sections.Last.Footers(.Index).Range.FormattedText
            .Range.Characters.Last.Delete
          End With
        Next
      End With
    End With
    wdDocSrc.Close SaveChanges:=False
  End If
  strFile = Dir()
Wend
Set wdDocSrc = Nothing
Application.ScreenUpdating = True
End Sub

Sub LayoutTransfer(wdDocTgt As Document, wdDocSrc As Document)
Dim sPageHght As Single, sPageWdth As Single
Dim sHeaderDist As Single, sFooterDist As Single
Dim sTMargin As Single, sBMargin As Single
Dim sLMargin As Single, sRMargin As Single
Dim sGutter As Single, sGutterPos As Single
Dim lPaperSize As Long, lGutterStyle As Long
Dim lMirrorMargins As Long, lVerticalAlignment As Long
Dim lScnStart As Long, lScnDir As Long
Dim lOddEvenHdFt As Long, lDiffFirstHdFt As Long
Dim bTwoPagesOnOne As Boolean, bBkFldPrnt As Boolean
Dim bBkFldPrnShts As Boolean, bBkFldRevPrnt As Boolean
Dim lOrientation As Long
With wdDocSrc.Sections.Last.PageSetup
  lPaperSize = .PaperSize
  lGutterStyle = .GutterStyle
  lOrientation = .Orientation
  lMirrorMargins = .MirrorMargins
  lScnStart = .SectionStart
  lScnDir = .SectionDirection
  lOddEvenHdFt = .OddAndEvenPagesHeaderFooter
  lDiffFirstHdFt = .DifferentFirstPageHeaderFooter
  lVerticalAlignment = .VerticalAlignment
  sPageHght = .PageHeight
  sPageWdth = .PageWidth
  sTMargin = .TopMargin
  sBMargin = .BottomMargin
  sLMargin = .LeftMargin
  sRMargin = .RightMargin
  sGutter = .Gutter
  sGutterPos = .GutterPos
  sHeaderDist = .HeaderDistance
  sFooterDist = .FooterDistance
  bTwoPagesOnOne = .TwoPagesOnOne
  bBkFldPrnt = .BookFoldPrinting
  bBkFldPrnShts = .BookFoldPrintingSheets
  bBkFldRevPrnt = .BookFoldRevPrinting
End With
With wdDocTgt.Sections.Last.PageSetup
  .GutterStyle = lGutterStyle
  .MirrorMargins = lMirrorMargins
  .SectionStart = lScnStart
  .SectionDirection = lScnDir
  .OddAndEvenPagesHeaderFooter = lOddEvenHdFt
  .DifferentFirstPageHeaderFooter = lDiffFirstHdFt
  .VerticalAlignment = lVerticalAlignment
  .PageHeight = sPageHght
  .PageWidth = sPageWdth
  .TopMargin = sTMargin
  .BottomMargin = sBMargin
  .LeftMargin = sLMargin
  .RightMargin = sRMargin
  .Gutter = sGutter
  .GutterPos = sGutterPos
  .HeaderDistance = sHeaderDist
  .FooterDistance = sFooterDist
  .TwoPagesOnOne = bTwoPagesOnOne
  .BookFoldPrinting = bBkFldPrnt
  .BookFoldPrintingSheets = bBkFldPrnShts
  .BookFoldRevPrinting = bBkFldRevPrnt
  .PaperSize = lPaperSize
  .Orientation = lOrientation
End With
End Sub

Function GetFolder() As String
Dim oFolder As Object
GetFolder = ""
Set oFolder = CreateObject("Shell.Application").BrowseForFolder(0, "Choose a folder", 0)
If (Not oFolder Is Nothing) Then GetFolder = oFolder.Items.Item.Path
Set oFolder = Nothing
End Function