1. Growing or remaining under water
   "viewing subaqueous fauna from a glass-bottomed boat"
   - subaquatic, submerged, submersed, underwater

See also: aquatic

• military march
• military mission
• military music
• military officer
• military operation
• military pace
• military personnel
• military plane
• military police
• military policeman
• military position
• military post
• military posture
• military press
• military quarters
• military rank
• military rating
• military recruit
• military reserve
• military science
• military service
• military strength
• military training
• military uniform
• military unit