The following lists indicate the order of precedence within each category when two or more medals from each category are worn at the same time.
a. U.S. military decorations
A decoration is an award given to an individual as a distinctively designed mark of honor denoting heroism or meritorious or outstanding service or achievement.
U.S. military decorations authorized for wear on Army uniforms are listed below in order of precedence.
Comprehensive page:
https://www.armyprt.com/grooming_standards/ar-670-1-us-military-decorations/
b. U.S. unit awards
A unit award is given to an operating unit and is worn by members of that unit who participated in the cited action.
Personnel who did not participate in the cited action, but who are assigned in the cited unit, are authorized temporary wear of some unit awards; only the unit awards specified in table 22–1 are authorized for temporary wear.
Personnel will not wear temporary unit awards for official photographs or for promotion or selection boards.
U.S. unit awards authorized for wear on Army uniforms are listed below in order of precedence.
Comprehensive page:
https://www.armyprt.com/grooming_standards/ar-670-1-us-unit-awards/
c. U.S. nonmilitary decorations
U.S. nonmilitary decorations authorized for wear on Army uniforms are listed below in order of precedence.
This list is not all-inclusive.
Personnel will wear other U.S. nonmilitary (Federal agency) decorations based upon date of receipt.
Comprehensive page:
https://www.armyprt.com/grooming_standards/ar-670-1-us-non-military-decorations/
d. U.S. service (campaign) medals and service and training ribbons
U.S. service (campaign) medals and service and training ribbons authorized for wear on the uniform are listed below in order of precedence.
Personnel may wear service medals and service and training ribbons awarded by other U.S. Services on the Army uniform, except for the Air Force Longevity Service Award ribbon and Air Force, Navy, and Coast Guard marksmanship medals and ribbons.
Personnel will wear service and training medals and ribbons awarded by other U.S. Services after U.S. Army service and training ribbons and before foreign awards.
Comprehensive page:
https://www.armyprt.com/grooming_standards/us-service-campaign-medals-training-ribbons/
e. U.S. Merchant Marine awards
U.S. Merchant Marine awards authorized for wear on the Army uniform are listed below in order of precedence.
Comprehensive page:
https://www.armyprt.com/grooming_standards/ar-670-1-us-merchant-marine-awards/
f. U.S. nonmilitary unit awards
The Public Health Service Unit Award and the National Intelligence Meritorious Unit Citation are authorized for wear on the Army uniform.
Comprehensive page:
https://www.armyprt.com/grooming_standards/ar-670-1-us-non-military-unit-awards/
g. Foreign decorations
Personnel who are specifically authorized by law to accept decorations from foreign governments may wear them in the order of their receipt after all U.S. decorations, the Good Conduct Medal, campaign and service medals, and service and training ribbons.
Personnel may not wear any foreign decorations on the uniform unless at least one U.S. decoration or service medal is worn at the same time.
Personnel will not wear foreign awards that do not conform to the standard U.S.-sized ribbon bar or medal.
Comprehensive page:
https://www.armyprt.com/grooming_standards/ar-670-1-foreign-decorations/
h. Foreign unit awards
The following foreign unit awards, listed in order of precedence, are authorized for wear on the Army uniform when at least one U.S. decoration, service medal, or ribbon is worn at the same time.
Comprehensive page:
https://www.armyprt.com/grooming_standards/ar-670-1-foreign-unit-awards/
i. Non-U.S. service awards
The following non-U.S. service awards, listed in order of precedence, are authorized for wear on the Army uniform when at least one U.S. decoration, service medal, or ribbon is worn at the same time.
Comprehensive page:
https://www.armyprt.com/grooming_standards/ar-670-1-non-us-service-awards/
j. State awards for Army National Guard Soldiers
Under the provisions of Title 32, United States Code (32 USC), Army National Guard (ARNG) personnel are authorized to wear State awards under applicable State laws or regulations when assigned to the ARNG under the command and control of the governor or Adjutant General.
Personnel will wear such awards in the State order of precedence after Federal and foreign awards.
Under the provisions of 10 USC, Soldiers on active Federal service are authorized to accept, but not wear State or territory awards.
Comprehensive page:
https://www.armyprt.com/grooming_standards/state-awards-for-army-national-guard-soldiers/