[ops33]

Both my wife and I are US citizens. Both of our children were born overseas when I was stationed in Germany. I find it hard to believe that both are not natural born citizens.

[Nero Germanicus]

Were your children issued Certificates of Naturalization? If they weren’t, they’re considered to be Citizens of the United States at Birth.
Definition C in the US Code for Nationals and Citizens of the United States At Birth seems to apply to your family: “(c) a person born outside of the United States and its outlying possessions of parents both of whom are citizens of the United States and one of whom has had a residence in the United States or one of its outlying possessions, prior to the birth of such person;”

[DiogenesLamp]

Both my wife and I are US citizens. Both of our children were born overseas when I was stationed in Germany. I find it hard to believe that both are not natural born citizens.

According to Vattel, they are.

His argument makes perfect sense to me.