Battle of Yorktown

1781: Siege and surrender

From late September to October 19, 1781, combined American and French land forces besieged the British at Yorktown while a French fleet under Admiral de Grasse blockaded Chesapeake Bay. Siege operations—trenches, earthworks and artillery bombardments—reduced British defenses and cut off escape by sea. General Cornwallis ultimately surrendered his army, roughly several thousand troops, to the allied commanders. The capitulation undermined British political will and precipitated negotiations that culminated in independence for the United States.

1862: Peninsula Campaign siege

In April–May 1862 Union forces advanced up the Virginia Peninsula toward Richmond. At Yorktown they encountered fortified Confederate positions and conducted siege operations that involved artillery duels, entrenchments and probing attacks. Confederate forces eventually withdrew to preserve their army and fight closer to Richmond; the encounter delayed Union plans but did not produce a decisive Union victory.

Tactical features and significance

• Both actions were characterized by siege warfare—digging parallels, sapping and sustained bombardment.
• The 1781 siege is historically pivotal: Franco‑American cooperation and naval superiority were decisive and it helped end major combat in the Revolution.
• The 1862 siege illustrated the importance of logistics, reconnaissance and caution in Civil War campaigning.

Yorktown’s name thus denotes two distinct episodes separated by eighty years; each reflects the military technology and political circumstances of its era and remains an important subject for American military and political history.