What is "war graves"

Usage examples of "war graves".

Trevor had glimpsed a few small church cemeteries on his way into town, and he remembered that the surrounding woods were seeded with old Civil War graves and family plots, sometimes just two or three rough-hewn stones in a lonely little cluster.

There are places to the north of the Lenten Way where the earth used to move every fifty years or so and uncover one of their war graves.