It´s Brazilian Marine Corps doing some poetical free martial touch for some tipicals folks songs here Like Axé at Salvador beach Bahia, and Forró knowed by other countrys to as " For all" and Aquarela do Brasil "Brazilian´s watercolor"
Now, that´s expeditionary march from when in WW2 Brazilian expedicionary division fought in American 5th Army, that song until these days is sung by Montese´s school childrens in portuguese, couse the brazilian division fought and freed that region, Montese, Monte castelo, Pistoia and around.
I have another of that Marchs and can do a translate for these songs, and First Brazilian fighter Group March, Brazilian air personal that fought flying P47 Ds supporting Brazilian division and 5th Army