There is nuance in everything, but generally speaking if you are an unwanted invader trying to seize control of someone else's home/country then you deserve whatever response you get from them. If that's them leaving the invader's dead to become dog chow, so be it. If someone came to my home and tried to take it, there is nothing that I wouldn't consider doing to repel them. I have to ask, what wouldn't you do to protect your family?
I am not speaking of the carnage that I would portray upon those intent on hurting my family.
I only asked if your statement;
"No sympathy.
Simple solution, don't want to die? Don't invade other countries."
goes for the US Soldiers that died invading other nations?