The first WW broke in Europe in the 1914 and was extended to Africa and in Cameroon. The war was fought between two main camps known as the triple alliance headed by Germany and Austria and the triple intense headed by France Holy J Russia.
The immediate cause of the first WW was the assassination of Arch Duchtrenz Ferdinand of Austria. Although this was an European prince which did not concern the Africans the triple indents also known as Allied forces extended it do Africa and particular to Cameroon. The Germans were defeated and lost Cameroon and the territory was later partitioned in 1916