If you look in the back, you can see large combine harvester machines. These are from Boley. Often military bases have large tracts of land and sometimes they are leased out and the land is farmed.
Coca-Cola in the Second World War tried to make sure that every US Army soldier could buy a Coca-Cola for 5 cents everywhere in the world. Even today, Coke is available for US Army soldiers all over the world.
My collection includes enough vehicles to populate a small town. Many US military bases have small towns just outside the main gate. US bases also sometimes become small towns with many types of vendors selling their products to servicemen.