SQL Select to XML - DIFFICULT

The following Select will produce the following XML
That LAST part of this is what I need to be rendered

SELECT STATEMENT
DECLARE @AssignmentNumber VARCHAR(100)
SET @AssignmentNumber = '11327'

Select
      (SELECT CAST([Assignment Number] AS VARCHAR(100)) [AssignmentNumber],
                  [Status],
                  [Employee First Name] AS FirstName,
                  [Employee Last Name] AS LastName,
                  leads.email,
                  [Client],
                  [Start Date] StartDate,
                  [Client State] ST,
                  (SELECT      classification AS [classificationName],
                              ISNULL([rule],'None') AS [rule],
                              [Doc Display] AS [DocDIsplay]
                  FROM      dbo.[vw_Document Requirements by Assignment for ACS] AS T2
                  WHERE      CAST(T1.[Assignment Number] AS VARCHAR(100)) = CAST(T2.[Assignment Number] AS VARCHAR(100))
                  ORDER BY classification  FOR XML PATH('Classification'), TYPE)
      FROM dbo.[vw_Document Requirements by Assignment for ACS] AS T1
      LEFT JOIN leads ON T1.[Lead ID] = dbo.leads.lead_id
      WHERE CAST(T1 .[Assignment Number] AS VARCHAR(100)) = @AssignmentNumber
      group by
            CAST([Assignment Number] AS VARCHAR(100)),
            [Status],
            [Employee First Name],
            [Employee Last Name],
            leads.email,[Client],
            [Start Date],
            [Client State]
FOR XML PATH('header'), TYPE)
FOR XML PATH('Document')

SELECT RESULTS
<Document>
  <header>
    <AssignmentNumber>11327</AssignmentNumber>
    <Status>Working</Status>
    <FirstName>Myra</FirstName>
    <LastName>LastName</LastName>
    <email>theemail11@aol.com</email>
    <Client>St. Clare''s Hospital - Denville</Client>
    <StartDate>2012-04-30T00:00:00</StartDate>
    <ST>NJ</ST>
    <Classification>
      <classificationName>Certification</classificationName>
      <rule>None</rule>
      <DocDIsplay>RN License</DocDIsplay>
    </Classification>
    <Classification>
      <classificationName>Certification</classificationName>
      <rule>None</rule>
      <DocDIsplay>CPR</DocDIsplay>
    </Classification>
    <Classification>
      <classificationName>Certification</classificationName>
      <rule>None</rule>
      <DocDIsplay>ACLS</DocDIsplay>
    </Classification>
</Document>

DESIRED RESULTS
<Document>
  <header>
    <AssignmentNumber>11327</AssignmentNumber>
    <Status>Working</Status>
    <FirstName>Myra</FirstName>
    <LastName>LastName</LastName>
    <email>theEmail1@aol.com</email>
    <Client>St. Clare''s Hospital - Denville</Client>
    <StartDate>2012-04-30T00:00:00</StartDate>
    <ST>NJ</ST>
    <Classification>
      <classificationName>Certification</classificationName>
      <rule>None</rule>
      <DocDIsplay>RN License</DocDIsplay>
      <DocDIsplay>CPR</DocDIsplay>
      <DocDIsplay>ACLS</DocDIsplay>
    </Classification>
</Document>