G'day
Sometimes it's as simple as 'The Mercenaries Campaign'. And sometimes the name isn't decided on until quite late, but I have had campaigns called:
The Giants of the Earth
The Survivors
Men of High Purpose
Brave Music
The Iron Stone Men
The Man in the Bamboo Mask
The Merchant of Thekla
Swords of St John
After the Big One
Survey
Survey II
Survey III
Cincinnati Special
Soldiers of Fortune
Thirty-Something
The Siege of Seattle
Sons of Mount Taygetos
Triplanetary
A High King of Darkness
Interesting Times
The Kingdom Renewed
Bloody, Bold, and Resolute
Creatures of the Night
Uninvited Guests
Secret Servants
Thundering Vale
Sons of Thunder
Canberra by Night
and a great many less distinguished names.
Regards,
Agback