Factual error: Many of the prisoners are wearing watches, which is incorrect. Upon arrest a prisoner's watch was confiscated. This prevented them using them to bribe or barter with corrupt guards (and as this film acknowledges, there were plenty of those) as well as making coordination of meetings or escape plans difficult.
Peter Harrison
18th Jun 2018
Suggested correction: It is true that most prisoners had their watches confiscated when they were captured. However, British POWs could write to Rolex in Geneva through the International Red Cross requesting a watch. Rolex would supply one with an invoice to be paid at the end of the war. The watches sent were steel because gold watches would have been confiscated by the guards. At least some of the prisoners involved in the Great Escape had these watches. Corporal Nutting, one of the masterminds, requested and received an Oyster 3525 Chronograph - a more upmarket model than the ones favoured by most POWs, which he used to measure the frequency of German patrols. After the war he paid £15 for it. In 2007 this watch and the associated correspondence was sold at auction for £66,000.
Peter Harrison
They are not wearing Rolex watches and the newly arrived prisoners are all wearing watches, which would normally have been confiscated.
No, they are not all wearing watches. Having watched the first half hour to check, the only definite watch I can see is being worn by Steve McQueen. I can't see enough of it to say definitively whether or not it matches the watches Rolex were sending. Many of the others are either definitely not wearing watches (Charles Bronson, for example) or, if they are, it is hidden by their clothes.
Peter Harrison