United States Marine Corps on Instagram: "Infantry in the Making #Marines with Infantry Training Battalion, School of Infantry – East execute the new Infantry Common Core Course, the Infantry Rifleman Course, and Infantry Weapons Course. The courses represent the evolution of infantry training and focus on advanced marksmanship, tactical decision-making, and resilience in order to equip Marines with the skills needed to dominate the modern battlefield. 📍 @camp.lejeune (Dec. 23, 2025) &#x