I think a lot would depend on the larger picture.
If we're talking about a military force that is essentially another survivor group I think they're likely to be sympathetic toward
the Tower survivors and antagonistic toward
the Mallers. I can't see much value to going to war with the Mallers unless the Mallers start it. How such a conflict would procede would depend on where the military survivors are located and how they're equipped.
Things change if the military force is part of a larger organization, such as a surviving government trying to re-establish control over Los Angeles. While I still think they would be sympathetic to the Tower survivors, their attitude toward the Mallers would be dictated by political considerations. I can see circumstances in which the military might choose to support the Mallers with supplies and weapons. After all, they are humans and they're fighting the zombies; their various crimes could be sorted out after order is restored. Or the military could be out to eliminate all opposition, zombie or human. In that case the first thing the Mallers might know of the threat is that moment between when the JDAMs pierce the skylight and they explode.
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