26:101st Engineer Battalion

The 26th/101st Engineer Battalion has a distinguished legacy within the U.S. Army, tracing its lineage to both the 26th Engineer Battalion and the 101st Engineer Battalion. The 26th Engineer Battalion was originally activated during World War II, providing crucial engineer support in the European Theater. The 101st Engineer Battalion, established in 1636 as part of the Massachusetts militia, is recognized as one of the oldest units in the U.S. military, participating in major conflicts from the Revolutionary War through the Global War on Terrorism. When operating as a combined or task-organized unit, the 26/101st Engineer Battalion has delivered vital combat engineering, mobility, and construction capabilities to support Army operations worldwide.