The numbers relate to the information the advisor gives in the battle - there are NOT numerous parts to the battle. I'm not sure if these are stand alone battles or campaigns - this is the order they were listed in. Again, a long list, and I can't be sure if these are final:


Teutoburg01
Teutoburg02
Teutoburg03
Teutoburg04
Teutoburg05
Teutoburg06
Teutoburg07
Teutoburg08
Teutoburg09
Teutoburg10
Trebia01
Trebia02
Trebia03
Trebia04
Trebia05
Trebia06
Trebia07
Trebia08
Trebia09
Trebia10
Trebia11
Trebia12
Trebia13
Trebia14
Pharsalus00
Pharsalus01
Pharsalus02
Pharsalus03
Pharsalus04
Pharsalus05
Pharsalus06
Pharsalus07
Pharsalus08
Spartacus01
Spartacus02
Spartacus03
Spartacus04
Spartacus05
Spartacus06
Spartacus07
Spartacus08
Spartacus09
Spartacus10
Carrhae01
Carrhae02
Carrhae03
Carrhae04
Carrhae05
Carrhae06
Carrhae07
Carrhae08
Carrhae09
Carrhae10
Carrhae11
Carrhae12
Carrhae13
Cynocephalae01
Cynocephalae02
Cynocephalae03
Cynocephalae04
Cynocephalae05
Cynocephalae06
Cynocephalae07
Cynocephalae08
Cynocephalae09
Cynocephalae10
Mancetter00
Mancetter01
Mancetter02
Mancetter03
Mancetter04
Mancetter05
Mancetter06
Mancetter07
Mancetter08
Mancetter09
Mancetter10
Mancetter11
Mancetter12
Mancetter13
Mancetter14
Mancetter15
Telamon01
Telamon02
Telamon03
Telamon04
Telamon05
Telamon06
Telamon07
Telamon08
Telamon09
Telamon10
Telamon11
Telamon12
Telamon13
Telamon14
Telamon15
Telamon16
Raphia01
Raphia02
Raphia03
Raphia04
Raphia05
Raphia06
Raphia07
Raphia08
Raphia09
Raphia10
Raphia11
Raphia12
Raphia13
Raphia14
Raphia15
Raphia16
Lake_Trasimene01
Lake_Trasimene02
Lake_Trasimene03
Lake_Trasimene04
Lake_Trasimene05
Lake_Trasimene06
Lake_Trasimene07
Lake_Trasimene08
Lake_Trasimene09
Lake_Trasimene10
Lake_Trasimene11
Lake_Trasimene12
Lake_Trasimene13
Lake_Trasimene14
Lake_Trasimene15
Syracuse00
Syracuse01
Syracuse02
Syracuse03
Syracuse04
Syracuse05
Syracuse06
Syracuse07
Syracuse08
Syracuse09
Syracuse10
Syracuse11
Syracuse12
Syracuse13
Zama00
Zama01
Zama02
Zama03
Zama04
Zama05
Zama06
Zama07
Zama08
Zama09
Zama10
Zama11
Zama12
Zama13
Zama14
Magnesia00
Magnesia01
Magnesia02
Magnesia03
Magnesia04
Magnesia05
Magnesia06
Magnesia07
Magnesia08
Magnesia09
Magnesia10
Magnesia11
Arausio01
Arausio02
Arausio03
Arausio04
Arausio05
Arausio06
Arausio07
Arausio08
Arausio09
Arausio10
Arausio11
Arausio12
Arausio13
Arausio14
Arausio15
Arausio16
Arausio17
Jugurtha00
Jugurtha01
Jugurtha02
Jugurtha03
Jugurtha04
Jugurtha05
Jugurtha06
Jugurtha07
Jugurtha08
Jugurtha09
Jugurtha10
Jugurtha11
Jugurtha12
Jugurtha13
Chaeronea00
Chaeronea01
Chaeronea02
Chaeronea03
Chaeronea04
Chaeronea05
Chaeronea06
Chaeronea07
Chaeronea08
Chaeronea09
Chaeronea10
Chaeronea11
Chaeronea12
Chaeronea13
Chaeronea14
Chaeronea15
Gergovia01
Gergovia02
Gergovia03
Gergovia04
Gergovia05
Gergovia06
Gergovia07
Gergovia08
Gergovia09
Gergovia10
Gergovia11
Gergovia12
Gergovia13
Gergovia14
Gergovia15
Gergovia16
Gergovia17
Gergovia18
Gergovia19
Alexandria00
Alexandria01
Alexandria02
Alexandria03
Alexandria04
Alexandria05
Alexandria06
Alexandria07
Alexandria08
Alexandria09
Alexandria10
Alexandria11
Alexandria12
Alexandria13
Alexandria14
Alexandria15
Bibracte00
Bibracte01
Bibracte02
Bibracte03
Bibracte04
Bibracte05
Bibracte06
Bibracte07
Bibracte08
Bibracte09
Bibracte10
MonsGraupius01
MonsGraupius02
MonsGraupius03
MonsGraupius04
MonsGraupius05
MonsGraupius06
MonsGraupius07
MonsGraupius08
MonsGraupius09
MonsGraupius10
MonsGraupius11
MonsGraupius12
MonsGraupius13
Tigranocerta01
Tigranocerta02
Tigranocerta03
Tigranocerta04
Tigranocerta05
Tigranocerta06
Tigranocerta07
Tigranocerta08
Tigranocerta09
Tigranocerta10
Tigranocerta11
Tigranocerta12
Tigranocerta13
Tigranocerta14
Tigranocerta15
Siege_of_Sparta01
Siege_of_Sparta02
Siege_of_Sparta03
Siege_of_Sparta04
Siege_of_Sparta05
Siege_of_Sparta06
Siege_of_Sparta07
Siege_of_Sparta08
Battle_of_Asculum01
Battle_of_Asculum02
Battle_of_Asculum03
Battle_of_Asculum04
Battle_of_Asculum05
Battle_of_Asculum06
CANNAE_TITLE
CANNAE_DESCR
CARRHAE_TITLE
CARRHAE_DESCR
CYNOCEPHALAE_TITLE
CYNOCEPHALAE_DESCR
MANCETTER_TITLE
MANCETTER_DESCR
PHARSALUS_TITLE
PHARSALUS_DESCR
SPARTACUS_TITLE
SPARTACUS_DESCR
TEUTOBURGERWALD_TITLE
TEUTOBURGERWALD_DESCR
TELAMON_TITLE
TELAMON_DESCR
RAPHIA_TITLE
RAPHIA_DESCR
LAKE_TRASIMENE_TITLE
LAKE_TRASIMENE_DESCR
SYRACUSE_TITLE
SYRACUSE_DESCR
ZAMA_TITLE
ZAMA_DESCR
MAGNESIA_TITLE
MAGNESIA_DESCR
ARAUSIO_TITLE
ARAUSIO_DESCR
JUGURTHA_TITLE
JUGURTHA_DESCR
CHAERONEA_TITLE
CHAERONEA_DESCR
GERGOVIA_TITLE
GERGOVIA_DESCR
ALEXANDRIA_TITLE
ALEXANDRIA_DESCR
BIBRACTE_TITLE
BIBRACTE_DESCR
MONS_GRAUPIUS_TITLE
MONS_GRAUPIUS_DESCR
TIGRANOCERTA_TITLE
TIGRANOCERTA_DESCR
BATTLE_TUTORIAL_TITLE
CAESER_IN_GAUL_JULII_TITLE
CAESER_IN_GAUL_JULII_DESCR
SONS_OF_MARS_JULII_TITLE
SONS_OF_MARS_JULII_DESCR
IMPERIAL_CAMPAIGN_JULII_TITLE
IMPERIAL_CAMPAIGN_JULII_DESCR
IMPERIAL_CAMPAIGN_SCIPII_TITLE
IMPERIAL_CAMPAIGN_SCIPII_DESCR
IMPERIAL_CAMPAIGN_BRUTII_TITLE
IMPERIAL_CAMPAIGN_BRUTII_DESCR
IMPERIAL_CAMPAIGN_CARTHAGE_TITLE
IMPERIAL_CAMPAIGN_CARTHAGE_DESCR
IMPERIAL_CAMPAIGN_EGYPT_TITLE
IMPERIAL_CAMPAIGN_EGYPT_DESCR
IMPERIAL_CAMPAIGN_BRITANNIA_TITLE
IMPERIAL_CAMPAIGN_BRITANNIA_DESCR
IMPERIAL_CAMPAIGN_GAUL_TITLE
IMPERIAL_CAMPAIGN_GAUL_DESCR
IMPERIAL_CAMPAIGN_GERMANIA_TITLE
IMPERIAL_CAMPAIGN_GERMANIA_DESCR
IMPERIAL_CAMPAIGN_MACEDON_TITLE
IMPERIAL_CAMPAIGN_MACEDON_DESCR
IMPERIAL_CAMPAIGN_PONTUS_TITLE
IMPERIAL_CAMPAIGN_PONTUS_DESCR
IMPERIAL_CAMPAIGN_SELEUCID_TITLE
IMPERIAL_CAMPAIGN_SELEUCID_DESCR
IMPERIAL_CAMPAIGN_SELEUCID_TITLE
IMPERIAL_CAMPAIGN_SELEUCID_DESCR
CAESER_IN_GAUL_TITLE
SONS_OF_MARS_TITLE
IMPERIAL_CAMPAIGN_TITLE
IMPERIAL_CAMPAIGN_PARTHIA_TITLE
IMPERIAL_CAMPAIGN_PARTHIA_DESCR
IMPERIAL_CAMPAIGN_GREEK_CITIES_TITLE
IMPERIAL_CAMPAIGN_GREEK_CITIES_DESCR
Also, these are the main options:

UI_NEW_GAME_TITLE
UI_NEW_GAME_PROLOGUE
UI_NEW_GAME_IMPERIAL_CAMPAIGN
UI_NEW_GAME_PROVINCIAL_CAMPAIGN
UI_NEW_GAME_HISTORICAL_BATTLE
UI_NEW_GAME_HISTORICAL_CAMPAIGNS
UI_NEW_GAME_CUSTOM_BATTLE
UI_NEW_GAME_QUICK_BATTLE
Imperial and Provincial Campaigns? Now that is interesting. I presuming the Imperial Campaign is the new name for GA mode?