Becoming an Officer in a foreign country

[Trevor]

To become an officer in a foreign country's military, do you have to be a citizen of that country by blood, or can you just get citizenship of that country later on?

 

[Redleg]

That depends on the country.

Most countries requires that you are a citizen before you can join the military at all, but you don't need to be born in that country.

 

[Troop Rupert]

Wotcha!
I'm looking at joining the Aussie Defence Force (currently I'm British Army), and to join as a Rupert, you need to hold the rank of Capt, and must apply for Aussie citizenship within 6 months of joining the ADF.
Hope that's useful... :?