After the landings she carried out offensive patrols against German shipping around the Brittany coast, sinking, with destroyers, Sperrbrecher 7 off La Rochelle on 12 August.

She returned to northern waters in September, where she covered Russian convoys and carrier raids against German shipping routes along the Norwegian coast, as well as making offensive sweeps herself.

[citation needed] A more extensive modernisation than HMS Royalist's 1953-6 refit with new boilers and anti-nuclear washdown for Diadem as NATO flagship and AA/AD escort was canceled in 1954 on grounds of cost, the manual hand loaded armament requiring lifting 82lb shells, lack of space for crew and the non military functions of a cruiser, entertaing potential friends of Britain and carrying disaster relief resources.

[6] Defence cuts saw it temporarily laid up as a fully manned static training ship for cadets in 1961.

The outbreak of war with India in December 1971 saw Babur deployed as one of Pakistan's few available large warships, taking station 70 miles west of Karachi[11] in an outer patrol zone, intending to protect the major ports of West Pakistan and oil tankers from the Gulf.

This led India to develop a plan to use its Styx-equipped Osa-class missile boats squadron with only Russian spoken in the Osa boats operation rooms for security, deception and commonality with the Indian officers trained in Russia for its major strike against the Pakistan Navy and the Karachi port installations and oil refineries.

Babur lacking anti-missile protection and ability to identify air and surface unit attacks was recalled to the naval base as a static flag ship.