Cover:

Description: A young lady's father is suddenly drafted into the US Army to fight in the midst of the of the Vietnam War. He served in the Korean War and hasn't recovered since, but he insists on fighting. His daughter knowing, he wouldn't survive if he does, takes his place. The night before her father is to be sent out, she takes on his name and is sent out into Vietnam. 

(It's basically Mulan but during the 60's.)

(Also, should the name be "The Vietnam War" or "Lady in Saigon"?)