Gloria Victis !
English is not my first language
The living rules P.29 say :
"Any moving naval unit that begin its move in a sea area must end its move in a Port; air unit can return to base anywhere in range where they can base"
But the next paragraph confusing me :
"Any moving unit that begins its move in a sea area must end its move in a Port"
What is meant by "any moving unit". An air unit must end its move in a port ?
The "next paragraph" you cite should have been deleted. That is what was edited in the prior sentences. Sorry about that!