Perhaps. If I recall correctly he did ultimately realise through the deaths of his sons that the war was worth fighting due to the vicious nature of the invaders. The Yankees committed some of the most horrid and terrible war crimes ever committed in human history against the Southern people. They waged total war against the whole civilian population for over 2 years of the war violating every known and established law of war which western civilization had agreed to hundreds of years before -- which even have their roots into ancient times. They even shelled defenseless towns that had no military presence and burnt them to the ground. Hundreds of Southern towns were completely set on fire after all valuables were stolen. The US generals Grant and Sherman openly wrote and Lincoln approved of a complete genocide of the Southern population if they refused to stop fighting.
Modern warfare against civilians began with the USA's war against the South in the 1860's. Ever since, they have brainwashed people that it's okay for civilians to be targeted during war. Although, that perspective has changed since Vietnam. They still do it but the media lies to the first world and makes them think every bomb is dropped only on military targets.
As for the father; turned sniper, I only remember the overall legend and not the details. There are tons of similar stories about Southern men during their war for independence. They are all very interesting. It was such a crazy and lawless time. All the famous Outlaws who have had many movies made about them (full of lies) and volumes written about their lives, were all Southern men who were former Confederates and they just personally chose to never surrender, even though their country had. The war never ended for them.
The war only lasted for 4 years, but what the war left them was utter ruin, corruption, lawlessness, and legal robbery by puppet governments and banks for the next 15 years. Once reconstruction ended, Southerners were able to elect their own governments again and order was restored and things settled down -- though they were still financially ruined from the war and what followed. It's important to note here that the Southern States were the PC weathliest States in 1860. The richest Northern State was poorer than the poorest Southern State in 1860.
If you ever want to study a really crazy and wildly interesting time in history, study the war for Southern Independence, aka; the so-called American civil war, which wasn't a civil war. Southerns had an independent country and did not care anything about Washington DC. They had numerous chances to take it but never tried because they didn't want the Northern population to think they were attempting to take over the US. They wanted independence, not control of DC.
Study the war and reconstruction from the Southern perspective since they were the victims of it and recorded what happened to them. It's a story of bravery, principles, sacrifice, defeat, ruin, misery, humility, and perseverance. I've never found another story in history quite like it. Their culture was so unique and fascinating and not many have sacrificed more trying to preserve what they and their fathers had built over a period of 260 years -- then witnessed in 4 years it all crumble and literally be burned to the ground, robbed of its resources, and left to starve -- as hundreds of thousands did.
The story of their suffering will crush a mans heart. Especially since they were such a gentle, caring, and loving people. Their men were the most honest and manly any society has ever produced. They were Roman statesmen and citizens, and the bravest soldiers, and the most manly gentlemen. For over a period of 200 years the Southern society was producing the greatest men of character in the world and many a foreign observer recognised it. I don't think any people have so many outside witnesses who lived amongst them that give more powerful testimony to the beauty of their culture and people. Not so in the North, but the exact opposite. Pretty much no foreign observer had anything good to say about the North. Not that the North didn't have her own greatness, but her poor laborers were in such miserable conditions, her streets were infested with homeless drunkards, whores, gambling, and all sorts of other manifestations of the worst parts of society. The North was also overrun with crime in many of its cities. The South had none of the aforementioned issues. Foreigners came to America and notice this and they all wrote about it.
I think those boys father having personally experienced the horrors of that war through the brutal and unjust death of his sons -- realised that he could no longer remain neutral, but had to defend his land against the demonic forces which were all over the countryside harassing homes and robbing the people blind and burning what they couldn't take. Go back and read the diaries of Union soldiers and their open confession in them about the pillaging and robbing which was taking place. Soldiers were stealing jewelry and dresses for their wives up north and mailing it to them. I could mention dozens of books written during that time recording all the injustice that was taking place, even those written by the great and honest men of the North who stood against the tyranny taking place to their own harm. Most were arrested and many lost everything for merely speaking out.
People who have never studied that time on their own by going to the source material have no idea what the true story is, and why the South was invaded, and why she resisted it so mightily. But God knows.