Honestly I think the suit looks a bit retarded, but its your character...
Ok if you want something like that (definitely not standard issue) you will have to be under SOC (Special Operations Command) at some time. SOC for the GTA works differently than modern day SpecOps in the fact no one applies to join them. They PICK the top (or most qualified for a mission) and invite them to join... this of coarse means your character is Bad*** before they offered him a slot in the SOC (I doubt you will have a problem with this requirement).
Also I would like an explanation of the suit's abilities (it can't be too powerful), why it was never widely circulated throughout the military, and why you have it. Also one stipulation on it... even with this suit your character never stood a chance against a single Shivan alone. Shivans were still stronger, faster (in zero to low G which is were most Shivan vs Marine encounters happened), and tougher.
The humans already have vast advantages due to technology (It doesn't help all the pokemon players seem to want to play cute and fuzzy Pokemon while all the human players are making bad***es), but lack the numbers, supplies, and such to ever win a war with the Pokemon. Which this will not become Human Vs Pokemon War 3 .... never the intention... Of coarse the Pokemon can cause earthquakes, and fart thunder so it balances out some...