Tasker thought the results of the Seven Years' War (1754–63) had only been the growth of corruption and luxury at home.[6] He wrote several poems on the Anglo-French War (1778–83) in which he represented the Earl of Sandwich, First Lord of the Admiralty, as being at the centre of a selfish and corrupt network.[7] Tasker saw the action by Admiral Augustus Keppel at the Battle of Ushant (1778) as a great victory, which he celebrated in his poem Nereus's Prophecy: A Sea-Piece Sketched off Ushant (1779).[7] The cover of this poem has a cartoon in which Sandwich and Hugh Palliser are showing hanging from a gallows, laden with emblems that show they are guilty, while a seated courtesan weeps over their fate.[8] In A congratulatory Ode to Admiral Keppel (1779) he wrote of Keppel, whom he saw as representing the interests of the honest trading community in England,