Guide for civ5units.xml?

[PawelS]

To enable FireTuner2, open <My Documents>\My Games\Sid Meier's Civilization 5\config.ini and replace "EnableTuner = 0" with "EnableTuner = 1"

(quote from here)

When it's enabled, run the game, run FireTuner, go to the "map" tab, check "unit plopper enabled", select a unit and player from the lists, and click on the map where you want to place the unit (right click to remove).