An illustrated history of the Americanbuilt destroyers and frigates supplied to the Royal Navy under LendLease which played a crucial role in Britains war in the Atlantic.As Uboat attacks on Britains vital sea lanes increased in ferocity and Royal Navy warship losses mounted the United States passed the LendLease Act the cornerstone of Americas wartime role as armourer to the Allies.Naval historian Angus Konstam here offers an account of the Royal Navys LendLease destroyers and escorts. The first batch were 50 World War Iera fourstacker destroyers in a deal sealed by the transfer of several global British bases to the USA. These warships were immediately recrewed refitted and pressed into service in the Battle of the Atlantic.