Oh yes, almost forgot.
One saint (can't remember which one - when I find out will tell you), said: "If I had to choose between Christ and the Truth, I would choose Christ."
It seems to me that this is our Christian calling - to love Christ more than anything. And it follows that if you love Christ and you have the love of Christ in you, quite naturally you will also "love your neighbor as yourself" as Christ loved us, and not leave anything to yourself (with the exception of giving up Christ) that you could sacrifice for the good of your neighbor. Lastly, Christ says: "Greater love hath no man than this, that a man lay down his life for his friends."John 15:13 and "by this shall men know that you are My disciples if you have love one to another."
An example of a saint fighting for authorities that were not in line with their beliefs, is St. Evstratios. St. Evstratios, together with his sons, fought for a pagan emperor on the emperor's request, . The emperor, knowing that Evstratios was a Christian, nethertheless requested St.Evstratios to fight in the war as St.Evstratios was an excellent general who had in the past only brought success to all wars he had fought in. Even after a successful battle, St.Evstratios and his family still suffered martyrdom at the hands of this emperor (or his successor).
I personally don't think that anyone seeing such suffering around them, as happens in wars, could refrain from helping and fighting for the suffering in every possible way. I don't think you would either, drewmeister.