Hello~ It has been a while since I've logged into SG, so here goes.
I've created a GA that goes with this. :) If you do not have the game to use this DLC then, visit the link below.
Link: https://www.steamgifts.com/giveaway/uxO78/warmachine-tactics-standard-edition

I bought a Humble Jumbo Bundle 6 which had this game in it, so I'm not so sure if it is or is not region locked.
A Key will be given.

Note: This content requires the base game WARMACHINE: Tactics on Steam in order to play.