In December 1939, the Battle of the River Plate took place between the German "Pocket Battleship", Graf Spee and the British cruisers, Exeter and two Leander-class, Ajax and Achilles. You can model all the ships in the battle using the £D-printed kits from John's Model Shipyard:
Graf Spee - JMS KM301
HMS Exeter - JMS RN320 (Exeter 1939 version)
HMS Ajax - JMS RN329 (Leander 1942 version)
HMS Achilles - JMS RN322 (Leander 1939 version)
Although Achilles was manned by New Zealand sailors in the Battle of the River Plate, New Zealand ships were not given the HMNzS title until late in the war.