Contrary to what you may think, the Legion is a group with different views than the Liberty Government, and believes them to be incompetent and corrupt. What people consider bad is just people with different views. The Legion is such group. Lately, we've been exploring options on how to establish the Legion as a sovereignty, rather than a pure military force up against Liberty. You can also account for the fact that as revolutionaries, it'd be wrong for us to have a negative opinion from civilians, neighboring nations, and what-not. You cannot win a revolution without the support of a nation's people. Sure, there may be those that wont want to get involved should a major conflict arise, but we'd prefer to look like liberators rather than terrorists. As such, humanitarian operations are our current option. Taking in refugees while simultaneously defending our border and getting on better terms with Bretonia (Obviously not asking for support against Liberty) is something we have decided to do.
Simply put, if we look like the good guys, people are more likely to rally to us rather than against us.