A Vietnam soldier returns home after 22-months in Cambodia. When he returns to America, his family and home are gone and nobody recognizes him.

I was also a little confused about why he is in Cambodia even though you said he fought in Vietnam. I know they're neighbouring countries but can't see why he isn't still in Vietnam or why it's mentioned if he is in Cambodia. If it is pivotal put it in the log line.

Also think it needs something else - what is he going to do? If you can strip the above log line down and add a few words to tell us what he is going to do to get back to normality. At the minutes feels like it cuts off half way through.

I'm confused. If he's a soldier who (I'm guessing) fought in Vietnam (the war? again, I'm guessing), then what does being in Cambodia got to do with it?