It largely has to do with eliminating confusion over times. 1300 hours can only be one time. Saying "one o'clock" can mean two different times.
Military time is the 24 hour clock. It was created to avoid any confusion between similar sounding times such as 2:00am and 2:00pm. If this was sent over a radio with bad reception for instance! This would be 0200 hours and 1400 hours in military time.
Military Rabbinate was created in 1948.
The Military Museums was created in 1990.
Military of Greece was created in 1828.
The Military Philosophers was created in 1968.
Pink Military was created in 1978.
Military Times was created in 2010.
Military of Chad was created in 1960.
Military of Ecuador was created in 1830.
Military of Slovenia was created in 1991.
Military of Turkmenistan was created in 1992.
Military Illustrated was created in 1986.