「Horizontal and vertical motions」with「internally divided, balancing, adjusting internal pressure」as it refers to EARS that adjust pressure internally via the eustachian tubes to equalize with that of the surrounding air pressure as altitude changes. Eustachian tubes connecting each ear to the throat are used to adjust internal pressure to enable optimal hearing and other performance. Human ears are「divided internally」into the outer, middle and inner portions and transferring sound waves via「internal bone fragments that are in contact but not otherwise connected.」「Rod down」element also suggests a flaccid condition, and one unmistakable characteristic of most earlobes is flaccidity, flesh with no muscle.
　Also refers to anything that hopefully you have HEARD and learned by LISTENING. Hearing and balance are connected, sharing a common nerve pathway to the brain. Ears function to assist with BALANCE and POSITIONING, both traits essential to the deployment of「divisions, in any direction」of soldiers and military forces in a battle, orders from lords and generals down through the chain of command to troops.
　Lower-right element of「internally divided」affects the balance and positioning of the person attempting to stand and walk. Ears contain a tympanic membrane, the eardrum, as the start of a process that transfers sound waves to nerve impulses, sending information to the brain for processing. Similar to messages and feedback from a battlefield, messages that were transmitted by specific cadences pounded on drums (and not bugles).
　Armies are「divided internally」and「battling」(斗), into divisions, battalions, corps, companies, regiments, and so on (…who could have possibly guessed that terminology?). The glyph suspiciously resembles the shape of a vertical CLAN FLAG attached to a pole used in China and Japan, often used today to advertise business services and some things you may have therefore HEARD about. This is the shape of the same vertical flags that were attached to a pole used to identify SOLDIERS as belonging to one side or the other of a battle (array of rods), and the most important things that soldiers must do (other than kill the enemy) is LISTEN, use their EARS, in order to HEAR the commands issued by beating and pounding drums, as well as to explosions and gunfire, adjust position and maintain a balanced fighting force, or else they die soon. Seeing movement, or no movement, of these flags revealing the balance and positioning of forces also was feedback to commanders of whether an issued order was AUDIBLE and HEARD by foot soldiers and cavalry, insofar as the motion of these FLAGS indicated HEARING a command. The hearts and minds of many soldiers, especially the serfs who were conscripted to fight and participating involuntarily, were often「internally divided and unable to become balanced, in need of adjustment.」

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: ear; handle (archaeology); and that is all (classical Chinese)
Japanese: ear, hearing, edge, crust, selvedge, selvage, equalizing pressure
Unihan extended: ear; merely, only; handle
EDRDG: ear

Used within names (nanori)
がみ