Who is Jack Stecker from Close Combat and what is their importance? Close_combat English & Literature Jack Stecker | Close Combat

Jack Stecker is commanding officer of the 2nd Battalion, Fifth Marines on Guadalcanal. He formerly worked at the Army's Infantry Center, and he had extensive knowledge about guns. Stecker had also served in Shanghai. Jack is promoted to Lieutenant Colonel on Guadalcanal and is subsequently sent to Australia, where he is promoted to Colonel and recommended for promotion to Brigadier General.