"The soul is so hard to heal. It is mortally wounded some-times...": a front-line diary as an historical source

The author presents the source of personal origin of the period of the Great Patriotic War, that is, the front-line diary. On the one hand, it allows to reconstruct certain historical events witnessed by the author, on the other hand, it provides an opportunity to look into his mental world and reconstruct his self-perceptions, since letters and diaries reflected the soul of a person in war, that is not available for any other types of sources.