OnDecember7,1941,theJapaneseairforcebbombedtheUSnavalbaseatPearlHarborinHawaii,andstartedthePacificWar.OnJanuary1,1942,atotalof26countries,ledbyChina,theUnitedStates,theUnitedKingdomandtheSovietUnion,signedtheDeclaratiorioftheUnitedNationsinWashington,anddeclaredwaragairistFascistGermany,ltalyandJapanwithalimilitaryandeconomicresources,establishinganinternationalanti-Fascistaliiance.ChiriaadoptedactiveforeigondipiomaticpoliciestowardtheLinitedStateswhiiefighitingagainsttheJapaneseinvaders.Asoneofthealiiednations,theUnitedStatesstartedtoaidChinaintheiatter'sresistancetoJapantoprotecttheinterestsofbothcouritries.SincethenChineseandAmericansoldiersandcivilianshadfoughtsidebysideforpeaceinthePaciffcRegion,Theirheroicdeedsanddailyliveshavebeenpreservedandpassedonbymeansofphotosandfilms.