activity by a military or naval force (as a maneuver or campaign)

the unsuccessful campaign in World War I (1915) by the English and French to open a passage for aid to Russia; defeated by the Turks

a campaign in the closing days of World War II in the Pacific (April to June 1945); in savage close-quarter fighting United States marines and regular army troops took the island from the Japanese; considered the greatest victory of the Pacific campaign for the Americans

the final campaign of the American Civil War (1864-65); Union forces under Grant besieged and finally defeated Confederate forces under Lee

American Civil War; a series of indecisive battles in Grant's campaign (1864) against Lee in which both armies suffered terrible losses

the military forces of a nation

go on a campaign; go off to war

a military campaign designed to achieve a specific objective in a foreign country

the unsuccessful campaign in World War I (1915) by the English and French to open a passage for aid to Russia; defeated by the Turks

a campaign in the closing days of World War II in the Pacific (April to June 1945); in savage close-quarter fighting United States marines and regular army troops took the island from the Japanese; considered the greatest victory of the Pacific campaign for the Americans

the final campaign of the American Civil War (1864-65); Union forces under Grant besieged and finally defeated Confederate forces under Lee

American Civil War; a series of indecisive battles in Grant's campaign (1864) against Lee in which both armies suffered terrible losses

the military forces of a nation