ArcaneThunder

About Arcane Thunder

Arcane Thunder 25 is a 2nd Multi-Domain Task Force exercise with U.S. Army and
multinational partners in May 2025 in Utska, Poland; Mainz-Kastel, Germany; and Fort
Huachuca, Arizona. This exercise will integrate joint forces, Allies, and partner capabilities to strengthen our ability to defend U.S. homeland and the protect our Allies.

Video by Sgt. Christian Tofteroo

Valiant Mark 25: Transfer of Knowledge

Marine Rotational Force - Southeast Asia

March 26, 2025 | 2:33

U.S. Marines with Marine Rotational Force-Southeast Asia, I Marine Expeditionary Force, alongside Singapore Guardsman with 3rd Battalion Singapore Guards, 7th Singapore Infantry Brigade, share information during Valiant Mark 2025, Singapore, March 26, 2025. Valiant Mark is an annual, bilateral training exercise designed to enhance interoperability, build mutual defense capabilities, and strengthen military-to-military relationships between the U.S. Marine Corps and Singapore Armed Forces. MRF-SEA is a rotational unit derived from elements of I MEF executing a U.S. Marine Corps Forces, Pacific operational model that involves training events and exchanges with partner military subject matter experts, promotes security goals with allied and partner nations, and ensures a persistent I MEF stand-in presence west of the international date line. (U.S. Marine Corps video by Sgt. Christian Tofteroo)