The movie takes great liberties with Trautmann's life as a prisoner and then football player in England. In the movie he is shown to being forced to play football while as a prisoner and was going to be forced to return to Germany until scouted by Manchester. In reality, when the war was over, he elected to stay in England and found work and joined a football team.
The movie shows Jock Thomson as Manager of Manchester City through out Trautman's time at Manchester City. In reality he was sacked in February 1950 and Les McDowall was City Manager when they won the FA Cup in 1956.
Wembley is shown with dug-outs on the side of the pitch in the 1956 Cup Final. Wembley never had dug-outs as shown and the management teams of each side sat next to each other.
Birmingham City are shown scoring in the 1956 Cup Final on the stroke of half-time. They actually scored after just 15 minutes after City had taken the lead after three minutes.
F.A. Cup Final crowds do not stand when Abide With Me is played. It is not the national anthem. Neither do the British use the hand on heart gesture.
A caption states that Trautmann was awarded the "Order of the Merit" by his native Germany. The award was, of course, the "Order of Merit".
Friar's trips to the camp to collect Bert are filmed in very hilly country, echoing the cliche of rural England. In actuality the landscape between St Helens and Makerfield, where Trautmann was interned, is fairly flat, and would have been quite industrial even at the time.