Yes, Mr. Jim, one of my great concerns here is that nationalism trumps the church, as you so aptly put it.
Like you, I am not too young to remember the Cold War. I Thank God Russia and the U.S. no longer point nukes at each other. But I also know it would probably take about 30 minutes to change that. So when I see a picture of a Russian priest blessing a nuclear submarine I can't help but think "could those nukes be pointed at my city someday?" The fact that the Patriarch of Moscow is constantly shown in support of Putin & crew does not help allay these fears.
I appreciate your service to our country, Mr. Jim. I tried to join the U.S. military at the end of the Cold War, but was kept out because of a medical condition. I have the utmost respect for our armed forces, and I see the need to maintain them. But similar to what you said, I think it is also the church's job to point out an alternative to the sword - even while ministering to all fallen humans in need of the church - be they soldiers, prisoners, students, businesspeople, etc.