The major significance of this battle is that it was the very first meeting in combat of ironclad warships.
loss in land
the louisiana
You could argue that there were two major battles in the war. The battle of Vicksburg was the major turning point. The battle of New Orleans sealed the deal for the North.
Battle of Saratoga.
While there was certainly Japanese attacks on the island, the major conflict was between the two navy battle groups.
battle of new Orleans
The british won and theictory led to the treaty of Paris that they signed with France.
When? If you are referring to World War II, the whole war was a series of major battles. Two of the battles were the Battle of the Bulge and the battle for Stalingrad but there were many, many more of equal importance.
Not battle, but a debate. The Missouri Compromise of 1820.
Two major battle in the South during the Civil War include the Battle of Chickamauga and the Battle of Stones River.
The Battle of Messines and the Battle of the Somme were two significant battles during the First World War. Others include the Battle of Mons and the Battle of Verdun.
Gettysburg, Vicksburg Siege/battle