Call out the Marines!

The call-up will affect Marines in the Individual Ready Reserve, a segment of the reserves that consists mainly of those who have left active duty but still have time remaining on their eight-year military obligations.

Generally, Marines enlist for four years, then serve the other four years either in the regular Reserves, where they are paid and train periodically, or in the Individual Ready Reserve. Marines in the IRR are obligated to report only one day a year but can be involuntarily recalled to active duty.

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Just a bit of curious news.