Colonel Von Luger: Are all American officers so ill-mannered?
Hilts: Yeah, about ninety-nine percent.
Group Capt. Ramsey: Colonel Von Luger, it is the sworn duty of all officers to try to escape. If they can't, it is their sworn duty to cause the enemy to use an inordinate number of troops to guard them and their sworn duty to harass the enemy to the best of their ability.
Col. Von Luger: Yes I know. The men under your authority have been most successful. This man, Ahsley-Pitt for example. Caught in the North Sea, escaped, recaptured, escaped, recaptured. Archibald "Archie" Ives: 11 escape attempts. He even tried to jump out of the truck coming here. Dickes, William: known to have paticipated in the digging of 11 escape tunnels. Flight Lieutenant Willinski: four escape attempts. MacDonald: nine, Hendley, the American: five, Haynes: four, Sedgewick: seven. The list is almost endless. One man here has made 17 attempted escapes. Group Captain, this is close to insanity.
Group Capt. Ramsey: Quite.
Col. Von Luger: And it must stop!
Col. Von Luger: Group Captain Ramsey, in the past four years the Reich has been forced to spend an enormous amount of time, energy, manpower and equipment hunting down prisoner of war officers.
Group Capt. Ramsey: At least it's rather nice to know you're wanted, isn't it?
Sedgwick: Danny, do you speak Russian?
Danny: A little, but only one sentence.
Sedgwick: Well, let me have it, mate.
Danny: Ia vas liubliu.
Sedgwick: Ia vas...
Danny: Liubliu.
Sedgwick: Liubliu? Ia vas liubliu. Ia vas liubliu. What's it mean?
Danny: I love you.
Sedgwick: I love you? What bloody good is that?
Danny: I don't know. I wasn't going to use it myself.
Suggested correction: The character of Hilts was based (in part) on the life of a British OSS agent who managed to pass as pilot by stealing a flight jacket (revealed in the DVD). We can only assume that since the Germans believed the camp was escape-proof, it didn't matter what Hilts was wearing, since he wouldn't be going anywhere.
Cobblers. Hilts is wearing casual clothing typical of the time the film was shot, not when it was set. No prisoner of war would be dressed the way he was. The posting is correct.
I've always assumed that the actor, Steve McQueen, insisted on the outfit so he would look hip per his image. He had a reputation for being a prima donna on set.