During the 1992-1995 war in Bosnia, three million people were driven out of their homes and just a million returned.
The Bosnian War, a long, complex, and ugly conflict following the fall of communism in Europe in 1991. Bosnia and Herzegovina joined several republics of the former Soviet dominated Yugoslavia to declared their independence. This triggered a civil war that lasted more than 4 years.
During this civil war, Bosnian Serbs built concentration camps in the north-western area of Prijedor where thousands of Croats and Bosniaks were imprisoned, tortured and/or killed.
According to official estimates, 25,000 to 329,000 people died in the conflict. Many were massacred when Bosnian Serb forces carried out ethnic cleansing against Bosnian Muslims across a large part of the country in an effort to create an homogeneous Serb territory joining Serbia to Serbian Bosnia and Croatia.
Here is some Some Solid Advice from a Bosnian War Survivor of Sarajevo:
Experiencing horrible things that can happen in a war - death of parents and friends, hunger and malnutrition, endless freezing cold, fear, sniper attacks.
Stockpiling helps. but you never no how long trouble will last, so locate near renewable food sources.
Living near a well with a manual pump is like being in Eden.
After awhile, even gold can lose its luster. But there is no luxury in war quite like toilet paper. Its surplus value is greater than gold's.
If you had to go without one utility, lose electricity - it's the easiest to do without (unless you're in a very nice climate with no need for heat.)
Canned foods are awesome, especially if their contents are tasty without heating. One of the best things to stockpile is canned gravy - it makes a lot of the dry unappetizing things you find to eat in war somewhat edible. Only needs enough heat to "warm", not to cook. It's cheap too, especially if you buy it in bulk.
Bring some books - escapist ones like romance or mysteries become more valuable as the war continues. Sure, it's great to have a lot of survival guides, but you'll figure most of that out on your own anyway - trust me, you'll have a lot of time on your hands.
The feeling that you're human can fade pretty fast. I can't tell you how many people I knew who would have traded a much needed meal for just a little bit of toothpaste, rouge, soap or cologne. Not much point in fighting if you have to lose your humanity. These things are morale-builders like nothing else.
For more on the Bosnia War, check out The Atlantic article, "20 Years Since The Bosnian War", which shows some dramatic pictures of Bosnia and its people during their civil war between 1992-1995, as well as photos of today.