What does Albert Kropp symbolize in the book? support with references

Kropp represents the clearest thinker of the group. He is symbolic of a rational critic who sees things as they are without the tainted lens of nationalism or self-interest. When Kemmerich, for example, is dying in the field hospital, he notices how the nurses and attendants quickly respond to officers' pain, but are slow to take care of enlisted men. He sees the injustice and hypocrisy of war and articulates these ideas.