Soyez hardis en joye mis,
Chacun s’assaisonne,
La fleur de lys,
Fleur de hault pris
Y est en personne.
Suivez Françoys!
Suivez la couronne!
Sonnez, trompettes et clairons
Pour resjouyr les coms, les coms, les compaignons.
    --La Bataille de Marignan

Indeed, I am following Francis in Dunnett's last book on the Lymond Chronicles. In the previous Book 5, as the Supreme General to Ivan the Terrible, Crawford modernized the Russian military to fight against the Tartars. This time, Francis Crawford is fighting for France to stave off a pincer invasion by Mary Tutor from across the English Channel, and the Spanish force lead by her Spanish husband King Phillip II of the Habsburg Dynasty.