HMS Glorious was the second of the three Courageous-class battlecruisers built for the Royal Navy during the First World War.

The Invincible class was a class of light aircraft carrier operated by the Royal Navy. Three ships were constructed, HMS Invincible, HMS Illustrious and HMS Ark Royal. The vessels were built as aviation-capable anti-submarine warfare (ASW) platforms to counter the Cold War North Atlantic Soviet submarine threat, and initially embarked Sea Harrier aircraft and Sea King HAS.1 anti-submarine helicopters. With cancellation of the aircraft carriers renewal program in the 1960s, the three ships became the replacements for Ark Royal and Eagle fleet carriers and the Centaur-class light fleet carriers, and the Royal Navy's sole class of aircraft carrier.

The three vessels have seen active service in a number of locations, including the South Atlantic during the Falklands War, the Adriatic during the Bosnian War, and in the Middle East for the 2003 Invasion of Iraq.

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