 However, this meant the effective end of his career, as so many admirals were created that not enough posts could be found for them.Grindall was one of the promoted men who never commanded at sea again, taking a shore appointment in late 1805 and retiring with his family soon afterwards as a Vice Admiral of the Blue on 31 July 1810, of the White on 12 August 1812, and of the Red on 4 June 1814.His retirement was a difficult one however, as two of his sons who had joined the navy in their father's footsteps, Edmund and Festing Horatio, died in 1811 and 1812 from unconnected illness.