Born in Warsaw on December 14, 1908, in 1934 Lokajski began working as a teacher at the Warsaw Sports School. He was an athlete for Poland and took part in the 1936 Olympics in Berlin.
During the uprising he was an officer in the Koszta company, becoming its commander as of August 30, 1944. He was a war reporter and photographer, and was killed during an air raid on September 25, 1944.