My father is a veteran and we've discussed this topic multiple times together. He doesn't feel the flag has anything to do with representing our military, but a representation of our entire country...all 50 states.
Having said that, if the flag is a representation of the country as a whole, then it means it also represents Gabe Kapler's right to not stand for a national anthem, and LaRussa's choice to voice his displeasure with it. Both are free to do that, which isn't possible in other places in the world. And one of the reasons for that obviously is what our military has accomplished in battle. I personally happen to side with Kapler, as I've been to different parts of the world and seen firsthand that other cultures aren't currently scared to send their kids to school or believe they may be killed when going to the grocery store.
You have every right to feel the way you do. It doesn't make you right, my father right, or myself right.