Movies that take place during World War II or in which the war is key to the plot. The movies aren't necessarily about soldiers or battles but rather simply could reflect life during this era (1939-1945).
Topics are subgenres
and/or themes of any kind (i.e.: Romantic Comedy, Friendship, World War II, Sports, and so on.) that enable you to define more specifically
the plot of the movie you are looking for. Topics are not keywords: If you search for a given topic, 'Sharks' for example, only movies in which sharks play a significant roll will appear, such as 'Jaws', not every movie that has a shark in it.
We already have more than 300 topics at Filmaffinity.