Editing Courageous-class aircraft carrier (section)

=== ''Courageous'' ===
[[File:HMS Courageous sinking.jpg|thumb|right|250px|''Courageous'' sinking]]
In the early days of the war, [[Hunter-killer Group|hunter-killer groups]] were formed around the fleet aircraft carriers to find and destroy U-boats. On 17 September 1939,  U-boat {{GS|U-29|1936|2}} struck the ship with two torpedoes, and ''Courageous'' became the first British warship sunk to enemy action in the Second World War. As ''Ark Royal'' had been surprised by a near-miss seven days earlier, the fleet carriers were withdrawn from this duty.<ref>Rohwer, pp. 1–3</ref>