Recommended for better artwork display. Pick what you find desirable and rename the file as follows:
For surface combat - rename file: NavalCombat_1024
For Air/Sea combat - rename file: NavalAirCombat_512
When finished, place directly in the Art Folder, Yes to Overwrite Existing file(s).
ALWAYS MAKE A BACK UP OF STOCK ART BEFORE PLACING NEW ART IN YOUR GAME.