The Original SPQR game contained 5 classic battles, Deluxe SPQR contains those 5 plus nine more.

The Battles

Heraclea
Ausculum
Beneventum
Bagradas Plains
Trebbia
Cannae
Baecula
The Metaurus
Ilipa
The Great Plains
Zama
Cynoscephalae
Magnesia
The Muthol River

Content:

5 Full color counter sheets
5 Double-sided maps
Rule Booklet
Two Scenario Booklets
Player Aid Cards
one Ten sided die

Newly added:
Barbarian Counter Sheet
Barbarian Double-sided map
Barbarian scenario booklet