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A beachhead is a temporary line created when a military unit reaches a landing beach by sea and begins to defend the area while other reinforcements help out until a unit large enough to begin advancing has arrived. The term is sometimes used interchangeably (both correctly and incorrectly) with ''bridgehead'' and ''lodgement''. Beachheads were very important in operations such as Operation Neptune during World War II, the Korean War (especially at Inchon), and the Vietnam War, among many other examples. Although many references state that ''Operation Neptune'' refers to the naval operations in support of ''Operation Overlord'', the most reliable references make it clear that ''Overlord'' refers to the establishment of a large-scale ''lodgement'' in Normandy, and that ''Neptune'' refers to the landing phase which created the beachhead; i.e. ''Neptune'' was the first part of ''Overlord''. According to the D-Day Museum: Once an amphibious assault starts, victory tends to go to the side which can reinforce the beachhead most quickly. There are exceptions to this rule where the amphibious forces have not expanded from their beachheads quickly enough to create a ''lodgement'' area before the defenders can reinforce their positions. Two famous examples in which the attackers failed to expand their beachheads before the defending side could bring up reinforcements occurred during the landing at Suvla Bay in the Gallipoli Campaign in World War I, and the amphibious landing at Anzio (in Operation Shingle) during World War II. ==See also== *Airhead (warfare) *Bridgehead *Lodgement 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「beachhead」の詳細全文を読む スポンサード リンク
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