Do all armies have the same rank structure?

Read also:

• How does an experienced gay/bi guy handle a bi-courius guy on his first time?
• Controversial streamer, Johnny Somali, has been arrested in South Korea for "obstruction of business". Additional charges may be on the horizon. What do you think should happen to Johnny Somali?
• If I want to grow muscles, is taking creatine a must or can I take whey protein only?
• Michaels completes acquisition of Joann’s intellectual property and fan-favorite labels - Boston.com
• Geologists Just Cracked Open a 500-Million-Year Mystery in the Grand Canyon — What They Found Is Rewriting Earth’s History - Indian Defence Review
• How should one handle a situation where they suspect their partner of cheating, but their partner denies it and claims it is all in their head?
• Why are so many US conservatives in this day and age still against racial mixing? They won't say it in public, but they are still against the mixing between Blacks and whites? Why?
• Costco's New Food Court Item Has Customers Divided: 'It's Offensive' - Delish
• Vernon Reid on Why Sly and the Family Stone Were the Greatest American Band - Rolling Stone
• Are you glad that political prisoner Andrew Tate has made it safely to the United States, where his freedom of speech is protected?
• Universe emerged from time, not from space? New theory shows how - Interesting Engineering
• Do you believe that the US and Israel's preparations for all possibilities in response to potential Iranian attacks are sufficient to prevent a wider Middle East conflict?
• Why is the mainstream media, traditionally liberal except for Fox, not reporting on Trump like he's a traditional candidate who has ideas, values, and a concern for the common good?