The 3rd Battalion, 4th Marines, 7th Marine Regiment Color Guard stands at parade rest during the battalion’s reactivation ceremony at Lance Cpl. Torrey L. Gray Field, Sept. 17, 2015.

Cpl. Carlos Santana (left), a scout sniper with 3rd Battalion, 4th Marine Regiment, uses his partner for support during Exercise Cunning Seahorse in 2018. (Cpl. Teagan Fredericks/Marine Corps ...

About 600 members of 3rd Battalion, 4th Marines and 1st Battalion, 7th Marines took positions in Okinawa training areas starting Feb. 13 for the third annual Jungle Warfare Exercise, said Maj.