Adenovirus infections occur in different military groups as acute respiratory diseases combined with backsets and pneumonia. At definition of etiological structure of acute respiratory diseases in 1606 soldiers of 1-2 year of service, placed in the division of infectious diseases of the military medical academy in 2000-2011, dominance of an adenoviral infection (37.4%) was revealed, especially in non-epidemic periods of influenza (77% in 2007-2008). Adenoviral diseases among the hospitalized patients became complicated pneumonia in 17.8% of cases, and the proportion of adenoviral pneumonia in the overall community-acquired pneumonia with acute respiratory disease was 55.2%.