Beagle Conflict

During Operation Soberanía, Veinticinco de Mayo was planned to support the invasion of the Picton, Nueva and Lennox islands.^{[citation needed]}

Falklands War

During the Falklands War, Veinticinco de Mayo was used in support of the initial Argentine landings on the Falklands.^[4] On the day of the invasion, she waited with 1500 army soldiers outside Stanley harbour as the first submarine and boat-landed commandos secured landing areas and then Argentine marines made the main amphibious landing. Her aircraft were not used during the invasion.^[5] Later, in defence of the occupation, she was deployed in a task force north of the Falkland Islands, with the cruiser ARA General Belgrano to the south. The British had assigned HMS Splendid (S106),^[6] a nuclear-powered submarine, to track down Veinticinco de Mayo and sink her if necessary. Rear Admiral Sandy Woodward, commanding the British task force from HMS Hermes stated in his book One Hundred Days that, had Splendid located the carrier, he would have "Recommended in the strongest possible terms to the Commander-in-Chief Admiral Sir John Fieldhouse that we take them both out this night".^[7]

Following the outbreak of hostilities on 1 May 1982, the Argentine carrier planned an attack on the Royal Navy Task Force. Veinticinco de Mayo's S-2 Trackers detected the British fleet late that day, and a strike by all eight A-4Q Skyhawk jets was prepared, scheduled to take-off at dawn. The attack did not take place, because subsequent Tracker sorties had failed to relocate the British fleet.^[8] After the British nuclear-powered submarine HMS Conqueror sank General Belgrano, Veinticinco de Mayo returned to port.^[9] The naval A-4Q Skyhawks flew the rest of the war from the airbase in Río Grande, Tierra del Fuego.

Disposal

In 1983, Veinticinco de Mayo was modified to carry the Super Étendard,^[10]Video and her British-built CAAIS combat data system was replaced by a Dutch SEWACO system, which was compatible with the Argentine Navy's new Almirante Brown-class destroyers. From 1986, problems in her engines largely confined her to port; rendering her unserviceable.^[11]

Work began in 1988 to refit the carrier, with it being planned to replace her steam turbines with gas turbines, while providing an auxiliary steam plant to power the ship's steam catapults. By 1994, the ship's machinery had been removed, but a shortage of funds led to work stopping.^[11][12] In December 1996, the Argentine Navy announced that Veinticinco de Mayo would be discarded.^[13] By this time, she had already been stripped of various major pieces of equipment, which were used as spares for the Brazilian carrier Minas Gerais, another Colossus-class ship which had been heavily modified in the Netherlands.^[14] Finally, in 2000, she was towed to Alang, India for scrapping.^[12]

Although Minas Gerais was offered to the Argentine Navy in 2000 as a replacement, she was rejected due to her poor condition and high restoration and maintenance costs. As of the 2020s, the Argentine Naval Aviation has lost the use of carrier-capable fixed-wing aircraft. While five refurbished Super Étendard aircraft were delivered to the Navy from France in 2019, these aircraft were missing key spare parts and therefore remained unserviceable.^[15] In 2021, it was reported that the return of these aircraft to an operational configuration was also encountering problems as the ejector seats of the aircraft were the MK6, manufactured by British firm Martin-Baker.^[16][17]