Slitherine

How to create German Marines for Kriegsmarine as in the scenario Danzig Bay ?
There are only Engineers for Kriegsmarine faction in the Editor ?

First you add all the factions you need in the scenario.
Than you open unit list of any faction containing unit of your interest, for example list of German ground units. You select some infantry (but do not place it on the map yet).
Than you change selected faction, for example to Kriegsmarine, and THAN you place unit on the map.
After that you proceed with Rename unit function to add custom name of a unit.

This can effectively turn any existing unit into whatever existing faction present in the game.

Thank you, it works.
I had to try this method before but it had not worked, certainly an error of manipulation from me.