well you didn't say how many you can domesticate so I would domesticate a few platoons of great apes and give them weapons to take over the world. even if its only 6 months... I think they are up to the task. A charging great ape will make most people shit there pants before they can get any shots off and the ones who do shoot will attract the ire of the ones around him. A great ape can rip your arm off like it was a sapling plant in the ground. They are fairly intelligent too.
Can great apes swim? Thought not. The Great Flotilla of Chris0132 rules the deeps uncontested! ALL COWER IN TERROR FOR THE NATIONAL ANTHEM OF THE GREAT FLOTILLA!
Ill take the air i guess. Alfred Hitchcock's "The Birds" anyone Emperor Penguins can be my heavy infantry. Whilst eagles and such will swoop form the skies, and grab stuffs. And I’ll have crows to peck your eyes out. Seagulls for my navy combind the three and we can take over the world!
You can be my top general. Does your war rhinoceros eat birds? I hear they taste like chicken. im sure my apes would love some avian meat.
The flotilla wishes to propose an alliance with the creatures of the air. We find the penguins of the frozen south to be adorable and wish to foster good relations with them.
My BloodRaven will be more cavalry for your army! I'll ride BloodRaven into battle! It's like bear cavalry, but it jumps over your walls instead of mauling your face.