Complex sentence: The flash from the Camels' Vickers gunss tended to dazzle the pilot when they were fired, while synchronised guns were considered unsafe for firing incendiary ammunition, the the Vickers guns were replaced by Lewis guns mounted over the wings while the cockpit was moved rearwards.
Split into simpler sentences: The flash from the Camels' Vickers gunss tended to dazzle the pilot when they were fired, while synchronised guns were considered unsafe for firing incendiary ammunition. The Vickers guns were replaced by Lewis guns mounted over the wings while the cockpit was moved rearwards.