Had a couple of ideas. I'm not very familiar with the conditions over there so they might not necessarily be good ideas.
1) If he likes fresh bread, a bread machine might useful. I'm sure there are plenty of used machines floating around. Most of the bread machine recipes will call for dry ingredients other than water and fat (if added), since they are written with a timer in mind.
2) I made some oatmeal overnight in a crockpot this weekend. So you can use a crock for breakfast as well.
3) If he likes rice, you could look into rice cookers. Then he could do a mixed beans and rice type of thing. I know people do more with rice cookers than just cook rice but i don't have one myself.
4) He could use a plug in hot water heater for soup mixes, hot drinks, instant oatmeal, etc. (He's probably sick of salty meals so soup mixes might not be too appealing.)
All the best to your friend and I hope he comes home safely.
"things like being careful with your coriander/ that's what makes the gravy grander" - Sondheim