I just finished reading Swarm by B. V. Larson.
I recently read Larson's Mech, and was expecting a similar ride. Happily, I had exactly that. This is another well paced easy read with a lot of action and large scale destruction. I kept thinking how similar it felt to War of the Worlds in the early parts, as alien ships arrive and start plucking people out of their houses. It quickly turns out they are testing them and trying to get the best possible commanders as possible. For what though, I won't spoil here.
I like where this series is headed. Swarm finishes with a minor win for the protagonist, but the larger picture is quite a bit more than knee deep in shit for humanity.