HMS Onslow (1916) 15 February 1916 and completed in April 1916. Her first commander was John Tovey, (later Admiral of the Fleet). On 24 April 1916, the Easter Rising against British rule broke out in Ireland. As a response, two Infantry Brigades were ordered from Liverpool to Dublin to reinforce the British forces, with "Onslow" escorting the transports carrying these troops. She saw action at the Battle of Jutland, where "Onslow" was badly damaged, with her speed reduced to . Nevertheless, Tovey pressed home the attack against first a cruiser and then a line of battlecruisers. "Onslow" was brought back to Aberdeen despite
Irish Citizen Army authorities tolerated the open drilling and bearing of arms by the ICA, thinking that to clamp down on the organisation would provoke further unrest. A small group of IRB conspirators within the Irish Volunteers movement had started planning a rising. Worried that Connolly would embark on premature military action with the ICA, they approached him and inducted him into the IRB's Supreme Council to co-ordinate their preparations for the armed rebellion which became known as the Easter Rising. On Monday, 24 April 1916, 220 members of the ICA (including 28 women) took part in the Easter Rising, alongside a much