Do all armies have the same rank structure?

Read also:

• Do interviewers discriminate against a candidate if he or she is overweight (assuming physical fitness is NOT part of the job requirements)?
• Scientists develop 'mosquito STD' to combat malaria - Phys.org
• This seed is rich in protein, magnesium, and helps grow muscle mass - Earth.com
• MindsEye team deploys first hotfix as they scramble to make the dang thing work - Polygon
• Zombie fungus-infected fly that likely lived among dinosaurs is preserved in amber - CNN
• Something Really Strange Happens When I Orgasm. Make It Stop. - Slate Magazine
• Do you consider yourself pretty?
• 7 Late-Night Snacks to Support Your Metabolism, According to Experts - AOL.com
• Can you fly an American flag in the UK in your own private property there? What is the UK’s government stance on that? And if yes, do you also have to fly the UK flag or the American flag can fly solo?
• Isaacman interested in privately funded science missions - SpaceNews
• Why do we still feel attached or jealous when a covert narcissist moves on, even after realizing their toxicity and the suffering they caused?