German fortification of Guernsey reduce the number and quality of troops required to defend the western ocean areas. Whilst the Luftwaffe and Kriegsmarine had their roles in protecting the islands from the Allies, the occupying forces put their main effort into land defences aimed at repelling a seaborne or airborne assault. The resulting construction work in the Channel Islands was extensive; it required thousands of workers and massive supplies of cement and steel. Tiny Guernsey received special treatment. It had the largest artillery pieces in the Channel Islands, tanks, and 12,000 troops: one soldier for every two civilians on the island, compared to France
External relations of Guernsey aim is to "promote the harmonious and mutually beneficial development of the totality of relationships among the peoples of these islands". In September 2015 there was a meeting with Nicola Sturgeon. Guernsey has formed part of the British–Irish Council since it was formed in 1999, as does Northern Ireland. Meetings take place twice a year, in 2004, 2010 and 2014 the meetings have taken place in Guernsey. Its stated aim is to "promote the harmonious and mutually beneficial development of the totality of relationships among the peoples of these islands". Guernsey has entered into Tax Information Exchange Agreements with most