The literal meaning of "uniform" denotes that each country involved in war must identify itself as belonging to that country so as not to kill or harm its own people. Yet, in the wearing of their country's uniform, others in another uniform contradict the meaning of the word since they are set apart and identified as different--the enemy. This contradiction of the uniformity of man is what James Kirkup's poem objects so as the poet suggests that all men are uniform themselves in the sense that they are "aware of sun and air and water" and they share humanity:
All men are uniform in that they share the essence of being human, living and loving just as others do. A conscientious objector in World War II, Kirkup makes an appeal to people with his metaphoric use of the word uniform
to understand the universal brotherhood of man in his poem, "No Men Are Foreign."