[Chainmail]

1. Computer with large database (engineering data,chemical formulae, medical data).
2. Solar batteries to recharge computer.
3. Stock of antibiotics.

[trailhkr1]

1. Computer with large database (engineering data,chemical formulae, medical data).

So when a 15 cent part goes kaputt in the computer 2 days after arriving in 724 a.d. you are screwed...