With the invasions on April 9, 1940, the First and Second companies were sent to Denmark while the Third company was sent to Norway aboard the transport ships Urundi and Antaris H.[1] On April 10, 1940 Antaris H was sunk by the Royal Navy submarine Sunfish with the loss of 15 panzers and crew. Only two tanks, a Panzer I and II, arrived in Norway. German forces in Norway were reinforced by the First and Second companies, who embarked on 20 April and arrived 24 April.