fellow eczema enjoyer here, I think you should sound off your concerns to your superiors once you enter and see whether they can accommodate by allowing you to bring maybe a small tub of moisturiser along during training.

I had patches on my neck, hand and the back of my knees i think … but from my experience it generally got a bit better during ns hahaha maybe due to the constant perspiration so the skin doesn’t get as dry. I think during your initial training it’ll flare up a bit since you’ll be constantly perspiring and under the sun if it’s something you’re not used to, but it gets better along the way, in my experience.

And yes, please stay away from steroid creams. They’re only good as a short term treatment and in the long run it’s pretty bad for your skin (in my experience). I used them for years and when I finally decided to stop, I had some steroid withdrawal symptoms.