Foreword:
I am new to Warmachine and I am still getting the various books and reading them and understanding all of the mechanics. I plan on using a line of warjacks supported by a choir (or two) and something to help repair any critical issues. I will, of course, refine my tactics as I get more experience at the game.
I know various factions have an engineer type unit that can repair warjacks; what is the Protectorate equivalent?
And are they worth it?