Port and resort in Lazio, Italy; site of Allied landings in World War II (5)

I believe the answer is:

anzio

(Other definitions for anzio that I've seen before include "Italian site of WW2 Allied landing" , "Italian WW2 beachhead" , "WW 2 landing in Italy" , "Italian port, site of WWII allied landings" .)

I've seen this clue in The Mirror.

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