I was in a game recently and this idea occurred to me and I was wondering if it was legit. If you had an infiltrator and a war hero it can be very hard to defend. He would drain most shields and destroy a hearty group of drillers possibly at a factory were there tend to be more drillers. I could also see this being useful for taking the outposts of eliminated players or resigners. But then against it costs three hires and considering other 3 hire combos is this worth it? Your thoughts?

It is powerful early on but the later a game goes on, the less powerful it becomes. Simple numbers defeats it, not to mention other specialists such as assassin and elder.

I've taken a little bit of a look around, and quite a few agree that an Infiltrator is a niche hire that is usually acquired only when facing a Security Chief, or another shield boosting opponent.

As for the War Hero- like Gardengnome said, they generally don't scale well into late game. Destoying 20 drillers per battle for two hires is generally a waste considering that there are specialists that increase global production, repair drillers globally or add a global buff for the same amount of hires.

Its an OK combo, but the specialists themselves are sub par.
Try maybe a princess/intellegnce officer and a Sentry
War Hero/General and a Diplomat. Kamakazi the war hero and have him return back to do again.