The submarine film is a subgenre of war film in which the majority of the plot revolves around a submarine below the ocean's surface. Films of this subgenre typically focus on a small but determined crew of submariners battling against enemy submarines or submarine-hunter ships, or against other problems ranging from disputes amongst the crew, threats of mutiny, life-threatening mechanical breakdowns, or the daily difficulties of living on a submarine.
The cramped, equipment-filled set of a submarine film (Das Boot, 1981)
War film is a film genre concerned with warfare, typically about naval, air, or land battles, with combat scenes central to the drama. It has been strongly associated with the 20th century. The fateful nature of battle scenes means that war films often end with them. Themes explored include combat, survival and escape, camaraderie between soldiers, sacrifice, the futility and inhumanity of battle, the effects of war on society, and the moral and human issues raised by war. War films are often categorized by their milieu, such as the Korean War; the most popular subjects are the Second World War and the American Civil War. The stories told may be fiction, historical drama, or biographical. Critics have noted similarities between the Western and the war film.
Japanese film poster for Kajiro Yamamoto's The War at Sea from Hawaii to Malaya (Hawai Mare oki kaisen), featuring acclaimed special effects by Eiji Tsuburaya
John Wayne in The Longest Day, 1962
1918 film poster for Die grosse Schlacht in Frankreich (The Great Battle in France), with Hindenburg in the background
Staged scene of British troops advancing through barbed wire from The Battle of the Somme, 1916