What do these parameters mean? That's explained in the table below! Unit Name/ID The command that is used to spawn units in HOI4 is the spawn command. After doing this, all you need to do is enter a simple console command to spawn units, this is explained below. Click here to view a guide on how to do this if you haven't already added the -debug option to your launch options. In order for this command to work, you need to have the '-debug' launch option added to the game in Steam. If you are a new player looking to learn the mechanics of the game, a well-seasoned player looking to make gameplay more interesting, or simply a someone looking to find how to to spawn units in Hearts of Iron, you've come to the right place.