Donald Trump has proven that he does not know what any potential Commander-in-Chief should: that military families also serve.

Until now Donald Trump’s presidential bid has remained relatively immune to the backlash which has followed by his offensive comments and rhetoric. That may be about to change after the GOP’s nominee criticized the family of Humayun Khan, an Army captain killed in Iraq in 2004, who had attacked Trump over his immigration policies. Nancy Sherman writes that what has been missed in the commentary on this week’s events is that military families also serve, by going to war vicariously with their family member, and often suffer from complicated grief syndromes and PTSD. Any Commander-in-Chief should be aware of this; Trump does not seem to be.