evidence: A viral Instagram post claims Melania Trump is the first First Lady to visit U.S. troops in a combat zone since 1969. At least two other first ladies, Michelle Obama and Barbara Bush, have visited troops in designated combat zones since 1969. [...] However, she is not the first First Lady to visit a combat zone, as defined by federal regulations, since 1969. At least two other former first ladies – Michelle Obama and Barbara Bush – have done so, as well.