It's 6 minutes long. This is found on the Rambo Trilogy dvd of Rambo III.
They talk about how vast the production is. At its center, it's the story of him saving his comrade. Abandoned castles being used as Soviet forts. They shot it in the Middle East for the sake of authenticity. Trautman is in a sense a surrogate father for the titular lead.
I recommend this to any fan of the property. 8/10