In the U.S. Military, you will see Officers wearing gold or brass bars to show their different rankings to the enlisted men, and women of our Arm Forces.
Whereas in the Orthodox Church, you will often see a simple Priest, high ranking Bishop, or monk wearing a wooden Cross to remind Christ forgiveness through His death, burial, resurrection.
In the Army of God, Christ is our greatest example of True humility and servanthood.
We can read many examples of this in Christ ministry and throughout Holy Scripture:
Christ humility and humility can be understood as Our Good Shepherd when He made Himself lower than the ranks of Angels in order to be the Sacrificial Lamb for the sins of the world.
Christ Who was the Creator of the Universe was born of a Virgin and became dependent on the very one He created by receiving milk from her breast.
Christ Who is the Bread of Life fasted 40 days in the desert before being tempted
by the devil to turn a stone into bread.
Christ Who is the Living Water ended His ministry in thirst by becoming our curse
while hanging on a Tree.Christ Who was innocent before His procurators pleaded guilty in His silence, yet I
the chief of sinners stand guilty of all charges.

Galatians 3:13 «Christ hath redeemed us from the curse of the law, being made a curse
for us: for it is written, cursed is every one that hangeth on a tree.»