تدريب الضباط
In April 1930 Travin became Battalion commander of the 73rd independent Artillery Battalion, a unit which he would stay with for the next five years. Within this time frame he also held the position of Assistant battalion commander and chief of the air defense post, January 1931-1935 for the 73rd. At this time he also attended the Air defense Course, Leningrad, October 1930, Advanced anti-aircraft Artillery Officer training Course, March 1935, Dzerzhinsky Artillery Academy, March 1936; and Advanced Artillery Officer Training Course, July 1936.