Possible Clues:

• Children behind vital part impair rapid progress
• Sensitive area that part of the year is under military command
• Command -- fast over 31 days
• Military movement order (to foot soldiers?)
• Order for soldiers to move
• Command to start a military walk
• Order music suitable for the army - and for the fleet
• Flying demonstration given by order of the military
• Skin under nail border that may be part of a tattoo?