British forces launched a brigade-sized night attack against the heavily defended ring of high ground surrounding Stanley

On the night of 11 June, after several days of painstaking reconnaissance and logistic build-up, British forces launched a brigade-sized night attack against the heavily defended ring of high ground surrounding Stanley. Units of 3 Commando Brigade, supported by naval gunfire from several Royal Navy ships, simultaneously attacked in the Battle of Mount Harriet, Battle of Two Sisters, and Battle of Mount Longdon.