2- Is a catholic soldier allowed to fight in favor of the country who is in battle with his fatherland, in case he knows that the enemy is right and his own country is guilty?

I have said before and been none to popular, that a Catholic can no longer serve this nation in uniform as it would be a cooperation w/NWO evil........we have had few wars of self defense in last 200+ yrs......whether trying to liqudated the South, indians or provoke wars.....if one was to join the military today, he would be sworn in taking an oath to God to uphold the Constitution, then promptly sent somewhere in the world to violate his oath to God........further, he would again, serve the interests of NWO......if, say Mexico or Canada invaded the USA theoretically, then we can take up arms and defend ourselves...if USA provoked, we would have less ground to stand on, but still, allowed to defend our homes,etc.......can se NO justification to go to Iraq,etc...remember, the oath is important and teh Constitution states that a war has to be officially declared by Congress or Letter of Marquis/Reprisal issued.

A former marine in my Church noted afew yrs ago tat morally, he could not encourage or support his son when, about to turn 18, was considering joining military....he voiced opposition ot policy and right to serve,etc....as I noted above....was encouraging, esp since this guy did serve and may have seen the horror of war and violence......

 I have some questions:
 1- Every judge is allowed to condemn a wrong doer to prison or even to death or atleast inflict some puishment on him. Is a catholic judge allowed to inflict just punishment on his own family members (eg. parents, spouse) if they desrve it?

Judges aren't in that position.

 

2- Is a catholic soldier allowed to fight in favor of the country who is in battle with his fatherland, in case he knows that the enemy is right and his own country is guilty?

I would think not if he has any choice in the matter.
 

3-If you are indebted to someone and owe him gratitude and respect, do you have to side with him and defend him when he is guilty? what if he is your lawful superior? can you defend the person who is oppressed by your superiors?

What do you mean "side with him?"  If he is wrong one cannot support him in being wrong.

 

4-There was a letter by a Church father who said that when a christians sees that an innocent person is blamed, he should keep silent and inform the other party in secret. Is it what we should do?

I think it depends on circuмstances.  Obviously a Catholic should not let an innocent man be punished.

I think I'll copy-and-paste this in another thread about just wars.

 What do you mean by "Judges aren't in that position"?

A judge will not stand in judgement of friends and relatives.  It's a conflict of interest.

  Just a day to day example of what I meant:
My father is a very hardworking man who has suffered many things for our sake, but he is very abusive (emotionaly and verbally I mean). after his divorce he married a really feminine and kind-hearted widow who was just 33. Now he lives seperately from her (in the first story of the same house). And sometimes he doesn't even speak to us and her for several days.
  I think it is just if I back up my step-mother and tell her that she is good and not guilty and it is dad who must see a doctor.
(she needs a shoulder to cry on and someone to listen to her. I am ready to do so.)
  But I wonder if it is not against the virtue of gratitude to do so.