Describe the British soldiers

Number one:  They were volunteers, the British Army were not allowed to force men into service by conscription or impressment.

Number 2: They were career soldiers, Soldiers in the army when the war began had enlisted as a life-long career, to be discharged when  no longer fit for service.

Number 3: They were enlisted as adults, Enlistment was based on fitness rather than a specific age, but most recruiting instruction called for men between 17 and 25 years old. there are cases where boys, mostly children of soldiers began their careers as young as 12; a few men enlisted in their 40's.

Explanation:

the boundarys like convergent divergent and transform it causes subduction

answer; in the 1950s;