Lee
I was diagnosed T1 5yrs ago and still serving!
I am downgraded to MLD, but that only (if ever) affects my deployability to certain places, occupational health decides on that. It's all about how tight/good your control is.
There was a guy who is T1 that was discharged last year because his blood sugars were all over the place. But, there is also an RLC officer who has been T1 for years but is MFD because of how well his control is!
Basically it is all about how well you control your blood sugars, it took me a good year to learn that.
If you need any advice/info feel free to MSG me.