The Campaign against Dong Zhuo was a punitive expedition initiated Process_start by a coalition of regional officials and warlords against the warlord Dong Zhuo in 190 in the late Eastern Han dynasty .

The Campaign against Dong Zhuo was a punitive expedition initiated Process_start by a coalition of regional officials and warlords against the warlord Dong Zhuo in 190 in the late Eastern Han dynasty .

The members of the coalition claimed Statement that Dong had the intention of usurping Change_of_leadership the throne by holding Defending Emperor Xian hostage and by establishing Creating a strong influence in the imperial court .

They justified Justifying their campaign as to remove Removing Dong from power .

This battle was the largest of the five major U.S. surface engagements since the Second World War , which also include Cause_to_be_included the Battle of Chumonchin Chan during the Korean War , the Gulf of Tonkin incident and the Battle of Dong Hoi during the Vietnam War , and the Action in the Gulf of Sidra in 1986 .

On 25 May , 2,500 Việt Minh troops overwhelmed Destroying the French fortress at Dong Khé , which lay Placing at the strategic center of RC4 , thus cutting Change the supply Supply line between the French positions at Cao Bằng and Lạng Sơn .

French paratroops retook Conquering Dong Khé on the evening of 27 May and a company of Legionnaires took Conquering charge of the fort .

The French responded Response by dismantling Destroying their small posts along the road and concentrating area forces Military_operation in the fortified positions at Dong Khé and Cao Bằng .

The commander of the Cao Bằng fort , Colonel Charton , was ordered Request to destroy Destroying his heavy equipment and motor transport and evacuate Emptying towards Dong Khé .

The plan Arranging was that Groupement Bayard would fight Hostile_encounter its way north from That Khe and retake Conquering Dong Khé , holding Conquering it long enough to link up with the Cao Bằng group .

The main US Army operation took place Process_start in an area about north of Bien Hoa , where the US 1st Battalion , 503rd Infantry Regiment ( 1/503 ) , 173rd Airborne Brigade conducted Action a helicopter assault on an LZ northwest of the Dong Nai River and Song Be River .

The 1st Battalion , Royal Australian Regiment ( 1RAR ) was deployed Arranging south of the Dong Nai .