Hangang Bridge bombing

In the early morning of 27 June, President Syngman Rhee had himself evacuated away from Seoul by his special train with several other South Korean government officials, despite informing his country on the previous day (26 June) of the decision by him and his government cabinet to remain behind in the capital city even with the looming threat of a North Korean attack on it.

[2] From noon to 3:30 pm on 27 June, the South Korean Army planted 3,600 pounds of TNT at the Hangang Bridge in preparation for its demolition.

ROK Ministry of National Defense confirmed that 77 policemen from Seoul Jongno Police Station died in the blast at that time.

[2][8] At 11:00 am, the North Korean Army then reached the bridge, and shortly after crossing the river, successfully occupied Seoul.

[2] The military engineer responsible for the bridge and carrying out the demolition, Colonel Choi Chang-sik, was court-martialed for misbehavior before the enemy.