Insensibility is a poem written by Wilfred Owen

Wilfred Owen

Wilfred Edward Salter Owen MC was an English poet and soldier, one of the leading poets of the First World War...

 during the First World War

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

which explores the effect of warfare on soldiers, and the long and short term psychological effects which it has on them. The poem's title refers to the fact that the soldiers have lost the ability to feel due to the horrors which they faced on the Western Front during the First World War.