Except that if that marine died, then he would have one less marine on his unit to cover his own weaknesses.
These same marines may come home from battle and let the person they committed to love for the rest of their lives die in the relationship by exposing and exploiting their weaknesses.
As a spouse it is your job to protect your spouse's weaknesses (I'm not talking about enabling).
If your spouse is anxious or depressed, you can help by giving comfort, you can love them unconditionally, and offer your strength. Everyone has low points in their lives when they feel weak. I know I am incredibly grateful for people who took time to strengthen me when I was low. My wife has done an incredible job of helping me work through hard times by acknowledging my weaknesses, and then when I was ready to receive her help, she guided me to sources of strength.