Answer:
The account of a Turkish Army officer named Lieutenant Baas is important because it provides an eyewitness account of the Armenian Genocide. While the Ottoman government denied any responsibility for mass killings of Armenians, accounts like Lieutenant Baas' provide evidence that contradicts the official narrative and suggests that the government was indeed involved in the genocide. Eyewitness accounts are important in helping to establish the historical record and to understand what happened during the Armenian Genocide.