A new campaign's been launched to try to control the amount of guns sold around the world.
The Control Arms group want governments to make stricter rules about who can buy and sell guns.
This means there would be fewer firearms for soldiers to fight with - including child soldiers.
It's thought there are around 300,000 child soldiers being forced to fight in different countries in the world.
This includes Uganda, Columbia and Myanma (Burma).
Stop gun deaths
The campaign is being backed by Oxfam, Amnesty international and IANSA.
They say that on average one person is killed with a gun every minute somewhere in the world.