Andrew Jackson
Of course, actually I would have realized the weakness of my country early in my first decade of rule, and worked hard to build up a highly trained Prussian style combined arms force that was small but well led, equipped and motivated. Romelia would have learned a hard lesson from it's aggressive ways, as I negotiated peace terms within artillery range of its capital city -- it's bloated and overly politicized and bureaucratic army in ruins after the lightning swift advances of the past two weeks.
Charon