US military troops come in active-duty, Guard, and reserve forces. Here's what each one does.
US military forces do a lot at home and abroad, but the different types of troops and the rules for each can be confusing.
Chhattisgarh: 31 Maoists, 2 security personnel killed in Bijapur encounter
The encounter comes a week after eight Maoists were killed in another operation security forces launched in Bijapur district.