After he recovered , he applied to join the Royal Flying Corps ( RFC ) but was deemed too heavy .
Crawford was afflicted with influenza and malaria , and in February he was invalided back to England and stationed at Birmingham for his recuperation .
After Crawford recovered , Crawford applied to join the Royal Flying Corps ( RFC ) but was deemed too heavy .
Crawford was afflicted with influenza and malaria , and in February he was invalided back to England and stationed at Birmingham for his recuperation .