Under his tenure , the situation between Japanese forces in Manchukuo and China became more severe , cumulating with the Marco Polo Bridge Incident and the invasion of Shanxi Province .
Shortly after the February 26 Incident , Sugiyama became Minister of War .
Under Sugiyama 's tenure , the situation between Japanese forces in Manchukuo and China became more severe , cumulating with the Marco Polo Bridge Incident and the invasion of Shanxi Province .
Shortly after the February 26 Incident , Sugiyama became Minister of War .