Mandalorians from the time they were true professional jungle fighter with Besulik droïds.
Send an army of true mandalorian warior and some few crusader trained on Kashyyyk (AKA they have some optic camo)

Are task to invade catachan. They have 60 Besulik droïds.
6 000 warriors.
1 000 crusader ganisons troops with optic camos.

All race gend'ai trandoshans etc....

They do break through the PDF force by stealthing their fleet then destroying the orbital PDF force.

Catachan have acess to melta shotguns flame trhower sniper sgrenade improvised explosive..... Etc etc......
But no Sly marbo for them.

Round 2 as soem predators in the jungle.

Who would win this gruesom fight in a merciless jungle in your opinion?