Do all armies have the same rank structure?

Basically yes.

(>>> Staff Sergeant (platoon leader or company quartermaster)

xx Lieutenant (platoon leader or company vice leader)

XX Lieutenant Colonel (battalion leader or regiment vice leader)

xxx Captain (company leader)

XXX Colonel (regiment leader

#### Colonel General (army group leader)

x Junior Lieutenant (platoon leader)

####### Generalissimus (overall supreme commander)

Private (does all the menial work)

##### Army General (theatre leader)

>> Corporal (squad leader)

###### Field Marshal (commander of the military branch)

## General Lieutenant (division leader)

> Lance Corporal (squad vice leader)

### General (corps leader)

# General Major (brigade leader)

X Major (battalion leader)

((>>> Company Sergeant (company quartermaster)

>>> Sergeant (platoon vice leader)