Artillery pieces from four different countries

Here are four artillery pieces from four different countries and three continents.  From Auckland, NZ comes the British RML 7″ 7-ton Coast Defense Gun displayed near Auckland War Memorial Museum, from Paris, France we’ve added the French 75mm Mle 1897 Field Gun located in Musée de l’Armée, from US here is the US 81mm M1 Mortar from now defunct Military Museum of Southern New England in Danbury, CT and finally from Canada –  British Q.F. 40 mm Mk.1 Bofors Anti-Aircraft Gun at Fort Rodd-Hill in Esquimalt.