Some are, in fact there is a sub-genre known as military SF.
However the vast majority are military history, which is a very
popular genre of non-fiction.
View page
Traditional Mexian music known as Ranchera has a vast
discography. The six time Grammy nominee, Juan Gabriel, provides a
good introduction to the genre, particularly his song Adorable
Mentirosa.
View page
genre
View page
a sub category of a specific genre. Example Mystery is a genre
and detective is a meta genre of the mystery genre.