The military occupation of the Channel Islands (Alderney, Guernsey and Jersey) by Nazi Germany during World War II lasted from 30 June 1940 until the Liberation on 9 May 1945 when Germany surrendered (being the last territory in Europe to be liberated). The Channel Islands, which are crown dependencies, and thus not integral parts of the United Kingdom, were the only portions of the British Isles to be invaded and occupied by German forces during the war.
During the occupation period, local issues were used in Guernsey and Jersey after British stocks ran out. Jersey issued first stamps on 1. April 1941 and Guernsey followed on 7. April 1941. In 1943 Jersey issued second Landscapes set designed by Blampied.
When the islands were liberated on 10 May 1945, the British Post Office allowed full validity to the local issues for one year. Previously these had only been valid for local and inter-island postage.