Latin phrase for Roman Army?

[Timianus]

It is:
IMPERIVM ROMANVM
IMPERIVM ROMANORVM

Unless you're CreateSpace, of course, who don't believe U was represented by V in the Roman alphabet (not that I'm bitter, you understand ...) :mad:

With my Devil's Advocate's hat on, as the quotation does not come from a Roman author but from a 17th century theologian, are the 'V's appropriate anyway?

Is there actually debate over the V vs U? How else do you get "double woo" = "w" later on?