This command spawns the unit with the specified ID within the province with the specified ID.
spawn [province id] [unit id]
|Province ID||The ID of the province to spawn the unit in.|
|Unit ID||The ID of the unit to spawn in the specified province.|
spawn 87 western_medieval_infantry
The province ID of Calais is 87. This command would spawn the 'western_medieval_infantry' unit in Calais.