Red Alert Mercenary Company

The Red Alert Mercenary Company is one of the more famous merc groups operating in known space.
While they will take jobs considered unsavory they are just as quick to take a job defending a colony under threat, as long as the employer can pay. They will generally refuse to take jobs that involve the wholesale slaughter of unarmed civilians or blatantly illegal activities that are likely to put them at odds with the law, but that doesn't make them good guys. They just prefer jobs where there is a clear cut conflict and clearly defined sides to avoid repercussions after those conflicts are over. It's just good business.
Red Alert specializes in last-minute jobs that require rapid deployment of offensive or defensive assets. Helping a colony rebound from a surprise attack, anti-terrorism and hostage rescue operations, pirate hunting, etc. They are the company you call when you should have called someone else three months ago, just be prepared to pay.
Despite the word "company" in their title, it is estimated that they have the equivalent of about four regiments, including two infantry regiments, an interstellar naval task force and a mechanized assault regiment. Generally, clients either purchase the use of one infantry regiment, one infantry regiment and the mechanized assault regiment or the entire company's services. However, units as small as an actual company can be hired as well.