They were pulled out of their regular Army units by the thousands.

NPR: Training the Trainers at Fort Riley

This will require strengthening its Reserve forces and their ability to mobilize and join regular army units, or to defend local municipalities.

CENTERFORSECURITYPOLICY: Deterring a Chinese attack against Taiwan: 16 steps

Now about six small teams of US special forces have moved into the city centre and some regular peshmerga units been moved in to protect public properties, put up checkpoints and curb the looting.

BBC: Kurds tighten grip on Iraqi north