Impact of the First World War In 1914 world peace was disrupted by an outbreak of war between Germany AustriaHungary Turkey Britain France Russia Italy and the USA. Britain declared war on behalf of the entire Empire expecting a short rapid victory or negotiated settlement. The colonies sent 1.4 million men including the White dominions Indians and African tribes. The Empire supplied vital raw materials and food contributing to the British victory in 1918. The president of the dominions and nominated Indian representatives joined the war cabinet in 1917.