Generalissimo

Generalissimo and Generalissimus are military ranks of the highest degree, superior to Field Marshal and other five-star ranks. The word "generalissimo" is an Italian term, from generale, plus the superlative suffix -issimo, itself from Latin -issimus, meaning "utmost, to the highest grade". Historically this rank was given to a military officer leading an entire army or the entire armed forces of a nation, usually only subordinate to the Sovereign. Other usage of the rank has been for the commander of the united armies of several allied powers.