The sinking of the British warship HMS Sheffield accelerated modern naval design.

The Falkland Islands are British territories' but they are found by Argentina in South America. The Falklands Islands war started in April 1982 when Argentinean forces invaded the Islands. The British government sent Air, Sea and ground forces and dislodged the Argentinean army after two and half months of bloody war.

The Argentinians, that's why the Falklands are still under the ownership of the UK

The battle for the Falklands was primarily a naval battle, so there were ship to ship engagements and there were aircraft sorties along with missile strikes on both sides. When the British eventually invaded the islands, small arms were used to subdue the enemy forces.