Do not mess with U.S. veterans. If you haven't been to war, with death and misery all around you, it's impossible to fully understand what soldiers go through.
You can have empathy for them. But only veterans who've been to war can truly understand what it means to see your friends being killed and wounded in front of you, or coming home yourself to a lifetime battling Post Traumatic Stress Disorder.
Veterans are unique, too, in that they don't know what kind of reaction they're going to get from the people they protected. If you're a paramedic, for instance, you're going to get a lot of grateful patients thanking you for helping them when they needed it most.
But soldiers come home from war to an uncertain reaction. Some people show them respect, and gratitude for risking their lives to protect your family and you. But other people direct their anger about the war itself at the soldiers who were just doing their job, and getting seriously wounded or killed in the process.
So, it's no wonder that veterans, like those writing the blog This Ain't Hell (But You Can See It From Here), get hot under the collar when someone pretends to have been to war, when they haven't. You've seen this on the news, or have read about it.