The Battle of the Atlantic, September 1939–May 1943

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:military_operation
gptkbp:casualties	tens of thousands of sailors lost thousands of ships sunk
gptkbp:combatant	gptkb:Canada gptkb:Italy gptkb:Nazi_Germany gptkb:United_Kingdom gptkb:United_States
gptkbp:endDate	May 1943
gptkbp:goal	control of Atlantic sea routes
https://www.w3.org/2000/01/rdf-schema#label	The Battle of the Atlantic, September 1939–May 1943
gptkbp:location	gptkb:Atlantic_Ocean
gptkbp:notableCommander	gptkb:Karl_Dönitz gptkb:Sir_Max_Horton
gptkbp:notableEvent	gptkb:Enigma_code_breaking gptkb:Battle_of_the_Convoys convoy system introduction of sonar and radar
gptkbp:opposedBy	gptkb:Allied_naval_forces gptkb:German_U-boats
gptkbp:partOf	gptkb:World_War_II
gptkbp:result	Allied victory
gptkbp:significance	longest continuous military campaign of World War II ensured supply lines between North America and Europe
gptkbp:startDate	September 1939
gptkbp:bfsParent	gptkb:History_of_United_States_Naval_Operations_in_World_War_II
gptkbp:bfsLayer	6