Yeah, Karolinens Bön and A Lifetime of War were two great songs. From this album we've heard Far From the Fame and To Hell and Back both being about WWII and WWI veterans and since the album is called heroes we can most definitely say that all the songs are going to be about individuals. This far however there are still 8 songs we haven't heard so I wouldn't say it's too late yet. We also the song Inmate 4859 which will almost definitely be about Pilecki and his trip to Auschwitz.
They will probably not make any more songs about Swedish history since their songs gathered the wrong crowds in Sweden. Apparently people saw them as racists even though in songs like A Lifetime of War they sang "Two ways to rule the world so similar at times, two ways to rule the world to justify their crimes. By kings and queens young men are sent to die in war, their propaganda speaks those words been heard before!" This being a reference to the catholic and protestant countries, Sweden being one of the protestant nations.
Not to mention the song Killing Ground where they sing "See the Caroleanen standing tall all for one and one for all enemies fall at their feet begging for their mercy! See the Caroleanen standing tall conquer lands and slaughter all enemies fall at their feet, victory and great defeat!" Or we have the Swedish version which makes the message even clearer.