A U.S. Naval historian says unlike land war, ocean battles leave nothing we can see on the surface.

一位美国海军历史学家说，与陆战不同，海战在表面上什么都留不下。

Since the Sicilian mountains are no place to fight a land war most of the war took place at sea.

但西西里岛的山区不适合陆地战大部分战役都在海上进行。