About campaigns we know from ew5

Campaign

Classical Age

Spartan Warriors
1. NO GUIDE
2. NO GUIDE
3. NO GUIDE

Alexander Cruisade
1. NO GUIDE
2. NO GUIDE
3. NO GUIDE

Han Empire
1. NO GUIDE
2. NO GUIDE
3. NO GUIDE
4. NO GUIDE
5. NO GUIDE

Rise of Rome
1. NO GUIDE
2. NO GUIDE
3. NO GUIDE
4. NO GUIDE
5. NO GUIDE

Medieval Age

Scourge of God

Son of Scotland
1. NO GUIDE
2. NO GUIDE
3. NO GUIDE
4. NO GUIDE

Red Beard Barbarossa
1. NO GUIDE
2. NO GUIDE
3. NO GUIDE
4. NO GUIDE
5. NO GUIDE

Random lady in purple

Empire Age

The Byzantine Empire
1. NO GUIDE
2. NO GUIDE

Dynasty Prosperity
1. NO GUIDE
2. NO GUIDE
3. NO GUIDE
4. NO GUIDE

Charlemagne

Discovery Age

Gunpowder Age

Industrial Age

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There are 150 campaigns in total according to the vid. 6 eras, meaning every era has around 25 campaigns.

The first era however, most likely only has 16 campaigns. Making the rest having more campaigns (1,5 on avarage=26/27 in total).