I recently received (Nov 2015) a series of "History of the 80th Infantry Division" books from Bob Murrell, covering AUG44 through MAY45. These books contain both the Operational History (descriptive text) as well as the more formalized History. For convenience and download, I've separated them out in Part 1 (Operational History) and Part 2 (Supplementary Data).

If you are looking specifically for 80th Division General Orders, they are here.

AUG 1944

• Operational History [PDF 9.1MB]
  • I - Disenbarkment and Movement to Forward Assembly Area
  • II - Movement to Sille Le Guillaume
  • III - Movement North Toward Argentan
  • IV - Battle of Argentan-Falaise Gap
  • V - Movement to the East
  • VI - Capture of Chalons Sur Marne
• Supplemental Data [PDF 7.8MB]
  1. Original Unit
  2. Changes in Organization
  3. Strength
  4. Stations
  5. Marches
  6. Campaigns
  7. Battles
  8. Commanding Officers in Important Engagements
  9. Losses in Action, Officers and Enlisted Men
  10. Former and Present Members Who Having Distinguished Themselves in Action
      General Orders #15-25

SEP 1944

• Operational History [PDF 12.8MB]
  • I - Advance to the Moselle River
  • II - Initial Crossing of the Moselle River
  • III - The Moselle River Bridgehead Established
  • IV - Expansion of the Bridgehead
  • V - Consolidation of the Bridgehead
• Supplemental Data [PDF 17.6MB]
  1. Original Unit
  2. Changes in Organization
  3. Strength
  4. Stations
  5. Marches
  6. Campaigns
  7. Battles
  8. Commanding Officers in Important Engagements
  9. Losses in Action, Officers and Enlisted Men
  10. Former and Present Members Who Having Distinguished Themselves in Action
      General Orders #26-47

OCT 1944

• Operational History [PDF 8.2MB]
  • I - Expansion of the Bridgehead East of the Moselle River
  • II - Consolidation of Defensive Positions West of the Seille River
• Supplemental Data [PDF 1.5MB]
  1. Original Unit
  2. Changes in Organization
  3. Strength
  4. Stations
  5. Marches
  6. Campaigns
  7. Battles
  8. Commanding Officers in Important Engagements
  9. Losses in Action, Officers and Enlisted Men
  10. Former and Present Members Who Having Distinguished Themselves in Action
      General Orders #48-67

NOV 1944

• Operational History [PDF 15.5MB]
  • I - Consolidation of Positions West of the Seille River
  • II - Bridgehead on the Seille River
  • III - Pursuit to the Nied River
  • IV - Bridgehead on the Nied Francaise River
  • V - Bridgehead on the Nied Allemande River
  • VI - Breaching of the Maginot Line
• Supplemental Data [PDF 1.5MB]
  1. Original Unit
  2. Changes in Organization
  3. Strength
  4. Stations
  5. Marches
  6. Campaigns
  7. Battles
  8. Commanding Officers in Important Engagements
  9. Losses in Action, Officers and Enlisted Men
  10. Former and Present Members Who Having Distinguished Themselves in Action
      General Orders #68-91

DEC 1944

• Operational History [PDF 9.5MB]
  • I - Attack to the East
  • II - The Well-Earned Rest
  • III - The Defense of Luxembourg
• Supplemental Data [PDF 1.8MB]
  1. Original Unit
  2. Changes in Organization
  3. Strength
  4. Stations
  5. Marches
  6. Campaigns
  7. Battles
  8. Commanding Officers in Important Engagements
  9. Losses in Action, Officers and Enlisted Men
  10. Former and Present Members Who Having Distinguished Themselves in Action
      General Orders #92-118

JAN 1945

• Operational History [PDF 7.3MB]
  • I - The Sure River Front
  • II - The Wiltz-Hosingen Front
  • III - The Seigfried Line
• Supplemental Data [PDF 1.7MB]
  1. Original Unit
  2. Changes in Organization
  3. Strength
  4. Stations
  5. Marches
  6. Campaigns
  7. Battles
  8. Commanding Officers in Important Engagements
  9. Losses in Action, Officers and Enlisted Men
  10. Former and Present Members Who Having Distinguished Themselves in Action
      General Orders #1-31

FEB 1945

• Operational History [PDF 7.2MB]
  • I - The Diekirch-Haller Sector
  • II - The Crossing of the Our and Sauer Rivers and Assault of the Siegfried Line
  • III - The Sauer-Our Bridgehead
  • IV - The Advance to the Prum River
• Supplemental Data [PDF 1.5MB]
  1. Original Unit
  2. Changes in Organization
  3. Strength
  4. Stations
  5. Marches
  6. Campaigns
  7. Battles
  8. Commanding Officers in Important Engagements
  9. Losses in Action, Officers and Enlisted Men
  10. Former and Present Members Who Having Distinguished Themselves in Action
      General Orders #32-59

MAR 1945

• Operational History [PDF 12.0MB]
  • I - The Kyll River Sector
  • II - Movement to Attack Position in XX Corps Zone
  • III - Attack from Sarrburg Bridgehead to Prims River
  • IV - Pursuit from Prims River to the Rhine Valley
  • V - Movement from Daddurkheim to Mainz
  • VI - Crossing of the Rhine and Main Rivers
• Supplemental Data [PDF 4.2MB]
  1. Original Unit
  2. Changes in Organization
  3. Strength
  4. Stations
  5. Marches
  6. Campaigns
  7. Battles
  8. Commanding Officers in Important Engagements
  9. Losses in Action, Officers and Enlisted Men
  10. Former and Present Members Who Having Distinguished Themselves in Action
      General Orders #60-90

APR 1945

• Operational History [PDF 11.3MB]
  • I - Capture of Kassel
  • II - Movement to Gotha
  • III - Movement East from Erfurt to Chemnitz
  • IV - Movement South and Occupation of Nurenberg
  • V - Commitment at Regensburg and the Isar River Bridgehead
• Supplemental Data [PDF 2.0MB]
  1. Original Unit
  2. Changes in Organization
  3. Strength
  4. Stations
  5. Marches
  6. Campaigns
  7. Battles
  8. Commanding Officers in Important Engagements
  9. Losses in Action, Officers and Enlisted Men
  10. Former and Present Members Who Having Distinguished Themselves in Action
      General Orders #91-115

MAY 1945

• Operational History [PDF 4.9MB]
  • I - Advance to the Inn River
  • II - Advance Through Austria
  • III - Tyrolean Finale
• Supplemental Data [PDF 1.7MB]
  1. Original Unit
  2. Changes in Organization
  3. Strength
  4. Stations
  5. Marches
  6. Campaigns
  7. Battles
  8. Commanding Officers in Important Engagements
  9. Losses in Action, Officers and Enlisted Men
  10. Former and Present Members Who Having Distinguished Themselves in Action
      General Orders #116-142