They know as much about buddhism as they know about Christianity.
Buddhism doesn't like war, but recognizes as a fact. Therefore, a strong army under a good king (government) is accepted as necessary as a bad king (government) may have a strong army as well.
How does that apply personally? A good father (or mother) should care for their family. Logically, this extends to protecting their family. If they are to protect their family, then they should avail themselves of the best means of doing so (strong army, good king) as a criminal may have that weapon (strong army, bad king).
Should they do violence in the process of caring for their family, the only result is that they would recycle upon their death and return again.
Of course, DUmmies read "the noble eightfold path" and didn't pay a bit of attention to the rest of it.