Troys Lost Battalion its self does not require money to keep running, But there are 2 ways to help out with donations,
You can Donate to DrForresters Charity, the money goes to a children hospital to help kids out who are sick. His Page can be found here.
You can also Donate the The Nation, a server that does infact need donations to stay up, there page can be found here
Troys has 2 donator ranks, one for Docs donation and one for the nation, also donateing to Docs charity will get you the donator rank on the nation