Operation Neptune is the second battle fought by Frank Keegan in Medal of Honor: Vanguard and apparently the third battle after the Operation Avalanche that fought by Boyd Travers in Medal of Honor: Airborne.This operation take place near the Normandy inland.In Vanguard,it is the first operation feature the StG-44 and Fallschirmjaeger,while in Airborne,its feature the M18 recoiless rifle and the mighty Tiger tank.