 On the morning of September 1 , with only the shattered remnants of E Company at hand , the US 9th Infantry Regiment , US 2nd Infantry Division had virtually no troops to defend Yongsan . Keiser in this emergency attached the 2nd Engineer Combat Battalion to the regiment . The US 72nd Tank Battalion and the 2nd Division Reconnaissance Company also were assigned positions close to Yongsan . The regimental commander planned to place the engineers on the chain of low hills that arched around Yongsan on the northwest . 
 On the morning of September 1 , with only the shattered remnants of E Company at hand , the US 9th Infantry Regiment , US 2nd Infantry Division had virtually no troops to defend Yongsan . Keiser in this emergency attached the 2nd Engineer Combat Battalion to the regiment . The US 72nd Tank Battalion and the 2nd Division Reconnaissance Company also <a href='uninflect' title='1'><mark>were</mark></a> assigned positions close to Yongsan . The regimental commander planned to place the engineers on the chain of low hills <a href='null_relcl' title='2'><mark>that</mark></a>arched around Yongsan on the northwest . 
On da morning of September 1 , with only tdashattered remnants of E Company at hand , the US 9th Infantry Regiment , US 2nd Infantry Division had virtually no troops to defend Yongsan . Keiser in this emergency attached thdand Engineer Combat Battalion to thedagiment . The da72nd Tank Battalion and the 2daDivision Reconnaissance Company also was assigned positions close to Yongsan . The redaental commander planned to place the engdaers on the chain of low hills arched around Yongsan on the northwest .