rogs wrote:what do military police units do?
They help reduce unrest in the region they are in - all units do this, it is just the MPs do it better.
how do i get more generals? how do i promote them?
Each nation has a quota for the number of generals of each type they should have. If you have less of them than you should you will be given another one. There is no way to change this quota. Some generals will appear even if you are over your quota. If a general is very senior (IIRC seniority 4 or less) and is the most senior general in the stack then you can press the promote button on one of the tabs to the right of the unit panel, you can do this even if over your quota. Next turn the general will be promoted, and as you now have less generals of his previous rank if this takes you below your quota you will get a replacement.
how come once i got dreyse needle rifles in the first month and in other games never saw them? why did i get the needle gun tech without any research but it is taking me years to research the minie-rifle?
Research comes in two types "technologies" that once you discover you have to investigate over a period of time (Muzzle loading rifle is an example of this), and "Inventions" that are discovered fully understood (Dreyse needle rifle is an example of this). The underlying mechanism with inventions is that once you meet the requirements you have a small chance of inventing it each turn.
if i know about the needle gun does that mean my infantry is automatically equipped with it?
No - before you can use the Dreyse needle you have to have researched the muzzle loaded rifle.
When you research the muzzle loaded rifle then you troops will start to upgrade - this requires that you have replacements available, and takes about 1 replacement for each 10 elements. If you have previously discovered the needle gun then next turn they will upgrade to it - which will take about another 1 replacement per 10 elements.
is my technological progress completely random? how can i influence what advances i get? apart from the speed-up / extra 1% investment button how can i get faster tech progress?
Short of spending money there is little you can do - I think if you have good relations with a nation that has already got the tech you will get a small advantage.
how do i rename units?
You can't rename units or elements. You can rename stacks by ALT clicking on their name on the tab of the units panel.