Jan Zumbach: Jan becomes the leader of the Polish fighter pilots because of his knowledge of English but also for his fighting and leadership qualities. His aggressive fighting style earns him the respect of his commanders but also the envey of some of the British fighter pilots stationed near or with them. Jan continued to fight with 303 squadron during the war. He scored 8 kills during the battle of Britain. In 1945, he was captured but survived the war. After 1945, he helped create the airforces of Katanga, a breakaway state in Congo that was dissolved in 1963.<ref>For more on Jan, see: Zumbach, Jean. 1975. <i>On Wings of War: My Life as a Pilot Adventurer</i>. London: Deutsch. </ref>
Ludwik Paszkiewicz: He was the first person in 303 squadron to shoot down an enemy aircraft, which occurred during a flight training. Although criticized, his gallantry earned him the respect of flight commanders and helped bring 303 into active service. Ludwik was killed in September 1940 after becoming a fighting ace when his aircraft was shot down, which was depicted in the film.<ref>For more on Ludwik and other Poles fighting for Britain, see: Gretzyngier, Robert, and Wojtek Matusiak. 2001. <i>Poles in Defence of Great Britain: July 1940-June 1941</i>. London: Grub Street.
Josef Frantisek: He was the top scoring ace during the Battle of Britain and was of Czech origin, one of the few non-Poles flying in 303 squadron. He is shown as
one of the top pilots. In reality, his plane crash in unclear circumstances, where he perished, but in the film he was shown as having crashed after running out of fuel.
John Kent: He was a fighter ace in World War II and the first leader of 303 squadron of Canadian origin. His task was to train and prepare the squadron for activation. He is shown as a tough leader who earned the respect of his pilots after a rough start with cultural barriers and the squadron's pilots nack for wanting to fight right away before they became operational.
Phyllis Lambert: Phyllis plays an operations staff member who is harassed by her male superior. Eventually, she and Jan become lovers for a while. Her character is fictional.
Witold Urbanowicz 'Kobra': He is a Polish fighter pilot who becomes among the leading aces among the fighter pilots. He eventually becomes the squadron leader after Kent leaves. He later
transfered to fight for a US squadron that engaged Japanese fighters in China.
Zdzislaw Krasnodebski: One of the Polish leaders of 303 squadron who was shot down during the Battle for Britain and sustained substantial burns. After his plane was shot, he miraculously was able to control his damaged plane so he can parachute and he was able to safely land in southern England. He did not speak good English so he feared being considered a German pilot, but soon it was realized he was not German. He survived the war.
==Accuracy of Events==