Then he called a meeting of all the nations of Europe.

That was over thirty years ago.
Sixteen of the great powers sent men to represent them.

They met here in Geneva and signed a treaty.

One by one other countries followed their example, until now forty governments are pledged to keep the promises of the Red Cross.
"They chose that as their flag in compliment to Switzerland, where the movement was started.

You see they are the same except that the colours are reversed.
"Now, according to that treaty, wherever the Red Cross goes, on sea or on land, it means peace and safety for the wounded soldiers.