[TPIN] Last Post question

[Abloncotpin at aol.com]

I think I heard Last Post in the early minutes of the film "Von Ryan's  
Express" starring Frank Sinatra which I taped on Memorial Day.  
 
Are there different versions of LP?  This one was pretty short.   I remember 
hearing a longer version, maybe a couple of minutes long instead of  30 plus 
seconds, in a military observance once before, but someone else played  it and 
I didn't get a good look at the chart.
 
Mike