See this infographic from Veterans United Home Loans on military rankings for the Army, Navy, Air Force, Coast Guard, and Marines.
us army ranks. please stop repinning this saying "military ranks" because all branches are different lol
RANK STRUCTURE AND INSIGNIA OF ENLISTED MILITARY PERSONNEL - ALL BRANCHES OF US MILITARY SERVICE
RANK STRUCTURE AND INSIGNIA OF ENLISTED MILITARY PERSONNEL - ALL BRANCHES OF US MILITARY SERVICE - web credit here - http://www.aviationexplorer.com/air_force_rank_structure.htm
For my life in the navy
Military | WWII | US Army Unit Emblems | (http://en.wikipedia.org/wiki/Division_insignia_of_the_United_States_Army)
Military Rank Chart - I know almost all of the Officer ranks/insignia now but this helps for enlisted!
Marine & Army Mom
Fullmetal Alchemist Military Ranks
1942 U.S. Coast Guard ranks and rates of commissioned officers, warrant officers, and enlistedmen and women.