Do all armies have the same rank structure?

Read also:

• How strict are your parents?
• How do people break a narcissist man's ego?
• What was your most memorable experience catching a fraudulent car seller?
• Why would the state lie about the Earth's shape? We know that it's flat, but why do they lie and tell us that it is a sphere?
• Can women learn to squirt?
• My parents force me (15yo atheist) to go to church, and there’s this thing called Small Sundays where we discuss the Bible in groups, there are questions asked about the Bible. What am I supposed to do when they ask?
• How do I know if I am a bitch? I try to be a nice person but people often jokingly call me a bitch. My family calls me a bitch sometimes too.
• J.K. Rowling said that 65% of people in Britain are transgender. Where did she come up with that statistic?
• Does any unofficial Roman Catholic card exist in the world to play? In Italy, Rome & the Vatican City, can practising Catholics get any discounts as a tourist, & / or privileged admission to certain sights, with different rules for non Catholics?
• Common blood pressure drug slows aging and boosts lifespan, even in older animals - Earth.com
• Why are liberals so bad at grasping alternative facts? For example, if something doesn’t happen the exact same way Trump described it, liberals dismiss it as false; while conservatives are able to fully understand the underlying principle.
• My boyfriend always verbally abuse me and makes me cry. If I try to tell him how hurt I was, he says to me he loves me and can't hurt me but always abuse me. Why?