A petty officer is a non-commissioned officer in many navies. They are superior to a seaman, and subordinate to more senior non-commissioned officers, such as chief petty officers.
A Royal Navy boatswain's mate in 1820
A petty officer of the Royal Navy on parade in London in 2015. Gold chevrons on the left arm represent good conduct, each one representing 4 years of service. After 15 years of service, with no breaks in good conduct, the individual is presented with their Long Service & Good Conduct Medal (nicknamed in the RN as Long Service & Undetected Crime Medal) it is the medal on the far right of this Petty Officer's row of medals.
Five United States Navy Reserve petty officers in Service Dress Uniform. From left to right: HM1, AT1, HM1, HM1, AT1.
A non-commissioned officer is an enlisted leader, petty officer, or in some cases warrant officer, who does not hold a commission. Non-commissioned officers usually earn their position of authority by
Petty officer
…A petty officer (PO) is a non-commissioned officer in many navies. They are superior to a seaman, and subordinate to more senior non-commissioned officers, such as chief petty officers. Petty officers…
A sergeant of the Coldstream Guards addressing through the ranks during the rehearsal for the Trooping the Colour ceremony.
Sergeant, Royal Artillery, on the esplanade of Edinburgh Castle, firing the one o'clock gun
A First Sergeant with the 55th Signal Company (Combat Camera) gets his soldiers ready for a uniform inspection