In July 1943, Megura transferred to the United States Army Air Forces. He was assigned to the
334th Fighter Squadron,
4th Fighter Group,
Eight Air Force, based in
RAF Debden. When Megura was attached to the squadron, they flew
P-47 Thunderbolts, however they switched over to
P-51 Mustangs after a few months. On March 6, 1944,
First Lieutenant Megura shot down one German
Messerschmitt Bf 110 and damaged a second one. Two days later, while on a
B-17 bomber escort mission, five
Messerschmitt Bf 109s attacked the group. Megura was able to quickly down one, and then engaged another Bf 109 which was attacking a B-17. Forcing the pilot of the Bf 109 to bail out, Megura claimed his fifth victory of the war along with ace status. Megura then damaged a third Bf 109 as it was landing at an airfield. While he was returning to Debden, Megura engaged a
Junkers Ju 88 with his last operating gun, knocking out one engine before he completely ran out of ammunition. For his actions during this three day period, Megura was awarded the
Distinguished Service Cross in April. Megura's coolant system was damaged, and he decided to bail out of his plane. However, he could not get his
canopy open. Megura then nursed his plane toward
Denmark, and he decided he would keep gliding toward neutral Sweden. Megura miraculously reached Sweden without crashing, and made a
belly landing at the
Kalmar Aerodrome. Upon landing, Megura was
interned by the Swedish military and was held until June 28. Megura chewed out his engineering officer for his faulty canopy when he returned to Debden. Due to diplomatic relations in securing his release from Sweden, Megura was no longer allowed to fly combat missions during the war and he was given an administrative job. Megura finished the war with a total of 11.83 aerial victories, plus an additional four on the ground. == Later career and life ==