Pregnancy and the military...

Hello ladies, I need some advice please....

My OH and I are TTC at the mo. I'm also due to go away training with the army (UK) in Oct so there is a slight possibility I may be pregnant by then. Its not basic training and will be basic stuff, mostly classroom, with a night exercise and shooting. Does anyone have experience of the military (army preferably) and being pregnant? Last time I was pregnant I was a reservist and wasn't even allowed to wear my uniform, but this was a long time ago. What can I do and not do?

Hope someone can put my mind at rest! Thanks xx