The Royal Navy's flag list expanded sharply during the Revolutionary and Napoleonic Wars. In 1768 it contained seven full admirals, ten vice admirals, and eleven rear admirals, plus twenty-two superannuated or 'yellow' admirals considered unfit for active duty. By 1812 there were roughly sixty officers in each active flag grade and thirty-one superannuated rear admirals. Calder's advancement took place inside an institution that needed many reliable flag officers as its wartime establishment grew.
Notable Point · 26:46-29:36
Wartime expansion of the admirals list
The growth of the Royal Navy's flag list from 1768 to 1812 reveals how wartime scale and seniority shaped the pool of available commanders.